Apple is being too ridiculous at this point. Devs need App Store but Apple also need devs. Being so hostile is going to hurt them pretty bad, both for Apple and for Google.
I use F-Droid everyday to install and manage apps outside the Play Store and it works out fine for me. Android is also open source. If I don't like the way something is done then I'm free to change it, and there are multiple ROMs that I can choose from as well.
Because Google had scary warnings that downloading Fortnite from outside the App Store my lead to security vulnerabilities. Where did they ever get that idea from?