"interface you use there" - yes, with a strong accent on "there". Sure, you can even run a x86 emulator in a browser and run anything you want there as long as

"interface you use there" - yes, with a strong accent on "there". Sure, you can even run a x86 emulator in a browser and run anything you want there as long as it's performant enough, but that's a very different thing to actually controlling the OS you run - and even if you do happen to be in some control, modifying anything in Android without reflashing the entire thing is still a massive PITA. And of course you're not gonna pass the attestations once you assert the control anymore, so why not just ditch Android completely at that point?