Except a vpn really only transfers who is watching and potentially logging your traffic from your ISP to the VPN provider.
Not quite. The fact that SwiftOn Security has said 'The solution to internet privacy is HTTPS' shows how useless their opinion is, however I will agree that they are sort of onto something on the 'like an ISP' thing.
In some countries (like the UK) ISPs are required by law to keep logs of every website you visit - VPN providers are not, and many attest to not keeping logs at all (it's debatable if they do, but many do allow for audits and the like). More than that, if your VPN provider is based in a country that doesn't have data extradition laws, they can't be pressured into giving over logs even if they have them. They'd also lose all business immediately if it was found out they were giving out data.
However, the real security comes from stopping random websites and services identifying you. If I go on to
www.badbadwebsitenumber42.scam, their log of me is the VPN IP address (as long as I've done things like use a Random User Agent plugin) which I share with hundreds/thousands of others, instead of my home IP address which is likely unique to me (or a couple of others max). Same with Bittorrent, and the same with any other service.
They also have extra useful features above the standard. The most useful for me is that it allows me to connect to websites and see localised content. For more security conscious people, my VPN does 'Tor over VPN', which means that I connect firstly through a VPN, and then through a Tor connection. This is useful as my ISP would definitely flag me if I used Tor on it's own.
You get this for all of like £5 a month max. Basically, regardless of how secure they are, they're a hell of a lot more secure than just using your ISP. Use HTTPS everywhere, use Random User Agent, but DEFINITELY USE A VPN.