We have decades of training in the consumer market for very simple install patterns using UIs, and minimal messing with configurations. The people in gaming who overclock and tweak their settings are a huge minority in gaming. Those people are the ones most likely to be able to grok switching to Linux, but when they get there and find that most of their favorite apps don't work like they are used to, they go back to Windows or Mac.
My hypothesis is that for Linux Gaming to truly take off, you'll need a true desktop (not steamdeck which i use weekly) that makes it a handful of "clicks" to get whatever they want installed working. That means you'll need a commercially backed OS where developers maintain all the things needed to support near infinite peripheral connections for a variety of use cases, clear anti-cheat interfaces, and likely clear DRM hooks as well.