We finally live in an age when I can tell a clanker that I want an app that does something that I need, connect the phone with adb and in half an hour have a working solution for my tiny problem while knowing little about android development. This is something google should embrace, not kneecap.
What's their interest in you building side-loaded apps instead of using their data hungry services?
Then tell the courts to stop fining them and start fining all the closed platforms.
There is a clear legal asymmetry where allowing competitors on your platform makes you liable if they complain, but blocking out everyone except for yourself is a totally ok and legally rosy way to do business.