Uh... I mean, kind of? Not really?

Bazzite makes significant use of Proton, which yes Valve primarily funds, though... probably more to the tune of millions to tens of millions, over its entire history so far, not... billions...

But as I said, its... mostly Fedora, with a good deal of prepackaged tweaks and prebuilt flatpaks and other systems they either manage or contribute to as a kind of functional ecosystem.

Fedora != Valve.

Anyway, I daily drive Bazzite.

I probably can help you, I've managed to fuck and unfuck myself by breaking and then fixing Bazzite more than once, by doing things they say you probably shouldn't do, and then using their provided wiki/tools/macros to fix things... and they've refined and improved their rollback command macros and such over the years.

But, you don't want to be helped, you want to complain, so, best of luck with that.