Apple was always that walled garden (aka prison) that can just pull the trigger on you.
@Damus will unfortunately obey the rules otherwise they are dead. Or if they find a solution the next take down notice is just a few features away. Sad but the truth, you are a cash slave on iOS.
Time for Damus and others on iOS to start working on a long term platform independent solution. Maybe PWA works as it does not need any phone exclusive functions anyway?
Android while not ideal, you can at least always install any app via apk manually even if it is banned from play store.
In the long run we should root more for Graphene, LinageOS or other open solutions, maybe even something new or a revived FirefoxOS.