As an iOS user who's been frustrated with Apple's approach to "self-loading" (i.e., running your own code on your own devices) and who's actually gone out and gotten Android devices to write PoC/PoV apps on instead, I really don't like Google's stance on this--even if I would not, at this time, choose to daily drive an Android device, I do rely on F-Droid for getting software on six or seven different devices _right now_ and they would be useless to me if I couldn't do it.
This year, I discovered SideStore on iOS, and its wonderful auto-refresh feature. Since then, I have written two iOS apps and am happily using them daily with zero issues. This plus the new Google announcement mean no going back to Android for me any time soon.
Doesn't really fix Apple's 7 day re-signing on iOS 26.