Enjoy shipping console titles that run at a constant 60 fps with no GC.

Again, fine for pet projects on PC :)

I'll continue to bite... What AAA 60+fps mobile game written Unity without coroutines are you referring to?

There's exactly 0 (zero) AAA games made with unity so it's going to be tough. They're all a terrible lag fest no matter how they're implemented

Genshin Impact makes billions and it's made in Unity. Seems to be good enough for them.