Yes, I try to use a third-party service. But here's where I made another mistake - using authorization through Apple - that created a huge problem on several occasions, because it's impossible to authorize in the app at all.
This is the American regulatory state working as designed btw. It's why the Government likes to let large actors coalesce. Easier to keep a few big companies compliant than a flood of little guys.
...which is why if you don't want to see this sort of thing we have to get away from tech giants, and diversify.
