Bazzite is a project of uBlue, which is Fedora Silverblue with a lot of gaming stuff on top, similar to Nobara or the tweaks on the Steam Deck.
It has the same big advantage of every other immutable distro, that you don’t have to manage your system yourself. It updates without you noticing, will never break, you can easily roll back if something doesn’t work as intended, and so on.
The cool thing is, that you can just rebase to another atomic variant if you don’t like it, or when you realize, that every gaming distro is just as capable for gaming as every other conventional distro too.