This is a better article IMO:
https://blog.cloudflare.com/http3-the-past-present-and-future/My comments (as far as i can understand this stuff) are:
http 2 is good for website browsing, when you need to request many (relatively small) files.
http 3 is good for that and for streaming content.
That's very good for today's general web.
That's also not very interesting for HFS, mostly aiming at serving few files per user, and not heavy browsing.
