People should do whatever the hell they like.
There’s no harm in trying out a lot of different distros for the fun of it if that’s what you find entertaining, and it’s educational to see the state of what’s out there.
Not needing to stay locked to a specific distro is part of why Linux is great, and very unlike Mac or Windows.
If you like being loyal then be loyal, that’s a fine choice too, and freedom of choice is what this is all about.
Because then your browser would itself have to be a torrent client.
The way torrents download is fundamentally different from how a standard http download works, which is why they have a specialist implementation. Browsers dont want to bother bringing a whole load of new code and associated bugs into the browser to do a job which isn’t really connected with the browser’s main responsibility, which is browsing the web.
Just because torrents come from the web shouldn’t make it the browser’s responsibility to deal with them.