Android OS on Switch is a nonsense.
If emulators are the goal, it would be better to use RetroArch on Switch. As it is optimized for it.
https://gbatemp.net/threads/retroarch-switch.492920/
Using Android as an intermediary for emulation is a waste of resources. Anything else Android related isn't worth enough for it to be ported to Switch, just because Switch doesn't have actual compatibility with it, like some Wii's with NGC games, or PS3 with PS2 games, XBOX One with (some) XBOX 360 games, and so on.
I'd use my 10" tablet instead for playing Android games, and my PSP/PS Vita for retro emulation.