The whole point of the current update is to make the game more accessible for general consumption. That includes working on a proper UI & graphics and also fixing bugs. This has already been confirmed multiple times, including in
Toady's FotF answer from a few weeks ago:
I still have a hope to do a fixer-upper release for the currently released 47.04, because the main issues are going to need to be patched up before the Premium release anyway, whether that's new bugs or stress issues or longstanding bugs or what have you.
So a mini-rant about bugs not being fixed is really misplaced at this point. Anyway, as to the specific issues you mention:
- Marriages, friends and grudges are broken, and you need ant-sized meeting rooms for anyone to know anyone
Not anymore, 47.03 added a person-seeking behaviour to dwarves, so they will now stand next to each in meeting areas and socialise properly with each other. Of course, some more improvement would be welcome, like dwarves seeking out relatives or already existing friends, because while friendships actually form now, marriages are still quite rare and I don't think I've seen a single grudge in ages.
- Military training & equipment are still bugged
I am not aware of any bugs around training in the current version. And the fact that military equipment is finnicky is a well-known issue and a common complaint, so it's presumably on the list of things that will get looked at for the Premium version.
- Raiding\outside missions are broken and can ruin the entire fortress due to bugs
The only major, critical issue here that I am aware of is the equipment list corruption bug. But again, that's known and acknowledged and one cause was already fixed in one of recent updates. The issue is still present, but considering it's a critical bug that leads to crashes, I am fairly certain it will get fixed.