I actually tried it on my Android 10 TV - PS5 today. Sideloaded Remote Play and Chrome, downloaded from apkmirror. You need Chrome because RP calls on a browser to log into PSN initially. Paired a DS4 with Bluetooth, works as it should.
Sideloaded apps need to be started through the Settings as they don't show up on the standard launcher, but you can generate an app
here that will show up