I reckon if you send a gamer kid down to the store to buy a PC they will come back with an Intel architecture machine, even if there were ARM machines there.
With Nvidia, AMD, and MS pushing, most new releases will probably have an ARM release, and older games can run with translation. The main problematic niche is older releases that are very CPU bound (like some sim games).
Games are the most optimised code there is.
Translation layers might cut it with vintage games but not with anything modern.
They JIT the x86 code to arm and their codegen is good enough to maintain most of native performance. Each new release brings them closer to closing the gap.
Where's your cutoff for vintage?
Portal 2 is demanding enough of a real-time FPS to demonstrate the principle and FEX is only becoming more optimized. It won't be long until it's running AAA games on low settings.
They seem to care a great deal about their hardware and gamer teenagers also seem to spend alot more time analysing hardware and milliseconds performance advantages than anyone else. They literally care about mouse latency in milliseconds.
They spend a huge amount of time on YouTube and online forums talking gaming hardware. If the word on the street is that ARM is milliseconds slower than Intel then they won't buy it. There's lots of huge YouTube channels that do nothing but measure game performance on various hardware.
Gaming is no longer dominated by affluent teenagers. At least not to the degree it once was.
The gaming community may care about numbers but I don't know if most actually know what those numbers say.
Oof.