The news is certainly discouraging for me since I'm working on Letterly.app, and I hope Apple doesn't crush us! But we have a rough idea of how to respond. I think Apple always tends to be a bit broad in their applications, and there will always be those who don't like Apple Music, Health, Weather...
A weak strategy is to hope that someone will dislike Apple on an Apple device.
You can focus on Android, but they will likely do the same.
I would consider pivoting.
Never focus on Android. That’s a losing strategy right there.