"Arse about as always" -- are you sure you wish to throw those stones in the glasshouse that is your general post history, Mr "we should totally give the Taliban a chance they say they're nice now"-man?
Let's look back at the facts here.
1. Swine Flu vaccine is found to cause narcolepsy in Nordic people, primarily Swedes and Finns, and primarily young people. There is a huge scandal over here with the government being made to pay damages to the victims. Despite the victims being very few, the fact that the authorities so heavily pushed the vaccine and disregarded all early reports of this side effect becomes the single biggest fuel for anti-vaccine sentiment here in the last decades, and the scandal is still one of the primary arguments people who don't get vaccinated here give of why they don't get vaccinated.
2. A study of the Nordic peoples shows a small but heightened risk for young people to have bad side effects of one of the vaccines -- and shut it with the "durr we don't know that until we see it ourselves" line of anti-intellectualism, I trust the educated professionals employed to look at research like this to better be able to evaluate it over random facebook researchers like you.
3. The authorities makes the call that since there is no lack of vaccines, the best strategy is for the landthings to cease distribution of this one vaccine to this group, and instead give them one of the other vaccines. The number of vaccinations in this strategy stay the same, and the only consequence is that the small chance of heart inflammation associated can be avoided for the group at risk of it.
Upon hearing this, you argue that it's wrong, and in your ignorance of the wider world suggest a course a better course of action. You are told that the better course of action is what happened, yet double down on how wrong it was without acknowledging this because, of course, that would show a modicum of self-awareness and you live by the code of the narcissist's litany. In actuality, this reveals that you never considered this to be a "better way" to begin with, you simply used it as an shallow rhetorical way to make the authorities seem even more wrong.
Then you start arguing about how the Swedish authorities committed to the health of the Swedish people should disregard this possible side effect, in the people they are in charge of caring for, for the sake of... The hypothetical effects this strategy of continued vaccination of people will have on the arguments some undefined concept of "world-wide" anti-vax people. I raise the more pertinent concerns of hypothetical effects failure to take another possible swine-flu situation in consideration will have on the Swedish anti-vax crowd -- the people much more relevant to the Swedish health agencies and the people they care and worry about spreading -- and you disregard that because... I'm not even sure; at this point it seems you're just an Americentric imperialist with his head up his arse who are unable to understand that the rest of the world doesn't exist for the benefit of you and that we have our own concerns and context of our own societies. You say "world-wide, but it's clear from your srnyimdnt and your examples what you actually mean is "American", probably because you lack the ability to emotionally and intellectually grasp the concept of the world beyond it as anything else than an extension of it. The Swedish authorities are concerned with the Swedish people. They should care about the Swedish people. They should not be concerned with whether their policies to avoid heart inflammation in young Swedes while continuing to vaccinate young Swedes might have on Americans. This shouldn't even need to be repeated, you not accepting that just goes to show how far up your own arse you've rammed that dunce cap of yours.
And then you repeatddly imply that the authorities should lie and deceive it's own populace, say one thing at press releases and then go behind the backs of media and the people and say another thing to the landthings. Again showing your lack knowledge about anything that isn't your own navel, because aside from that being morally and ethically despicable and an affront to the very concept and reason of being of authorities in open and democratic societies, this isn't how Sweden works. These things are public. When agencies such as the Folk Health Agency makes this kind of advice anyone can waltz into the landthing offices and ask to see the documentation. But since you're so concerned with the hypotethical staunching of anti-vax flames, do you understand that something that would really cause them to flare up in Sweden? If the FHM was caught lying to the public about possible health risks while telling the landthings another thing. Which would be immediately revealed, because you wouldn't even need whistle-blowers to tell the media they did, because every single media outlet routinely check up on these things by looking over the automatically public documentation.
As for your "shout fire in the theatre" rhetoric, that's also a flawed and inappropriate metaphor. This isn't some random theatre visitor causing panic in a crowded space. This is the professional agency in charge of preventing fire hazards, after having received reports of burns in a small but consistent group of the theatre audience and reviewing those, letting it be known that there is no fire; but the audience on the first three rows of seats where all the burn reports were from will be moved to another locale where they can continue to watch the play without risking burns. Don't go complaining about mudslinging and being strawmanned (for having your americentric views put in context, no less!) and then throw around trite and irrelevant stock phrases like that.
Sweden still has a high trust in both vaccination and the FMH. Such trust is imperative to combat both anti-vaxxers in general and covid-anti-vaxxers more specifically. You don't build that kind of confidence by lying to and deceiving your own populace. You don't build it by disregarding reports of vaccine side-effects, especially when the actions available to counter them are as easy as simple as a question of logistics where everyone still ends up vaccinated. You build it by being open and honest about what you are doing and why you are doing it. Your way of reasoning, feelotraveler, goes completely against your professed goals. Following your warped and alarmisg intuition would result in anti-vax sentiment growing, not decreasing.