Yeah, this article was pretty accurate, but then Valve had to go and ruin it. Seriously, pretty much any distro you can imagine, you can install Steam in like three clicks, then you'd entire Steam game library just runs perfectly under Proton with zero tweaks.
Nvidia used to be good at least for some good challenge--I still have nightmares about nvidia-xserver-settings--but even they've dropped the ball as long as you're not using some militantly FOSS distro with only three downloads.
And don't even get me started on SteamOS.
I'm sorry, but modern day Linux is for n00bs. Real chads use TempleOS
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