Let's be honest here. Even if games came ported to Apple Silicon with slightly downgraded graphics, do you really believe at this point it's a technical issue? It's just not. At the very least, current Apple silicon can deliver graphics better than the Switch, and comparable or better to the PS4.
It might not be state-of-the-art, but you can deliver plenty of games with those levels of graphics already. So, as we discussed before, it's a political matter / Apple not wanting to commit to industry standards and APIs, thinking that people will magically adopt Metal.
Spoiler: they won't.