I’m not going to use their terrible web site, nor the abomination that AlienBlue got mangled into as the official app, so…
I’ve not used it this past week, and will wait until the official cutoff date to see if my aging 3rd party app of choice stops working. If it does, that’s it, I guess… they made the decision for me.
I think you’re (intentionally or otherwise) mistaken about Apple and privacy. E2E encryption and key data being stored only on device, it’s the best privacy story around. They don’t make money by selling you or your data - they make money selling hardware to you.