I guess that’s true, but I’d prefer the phone number part being optional. If you don’t give it, you don’t get access to the easy migration or discovery features, but you get to hide your phone number.
This is always surprising to me. I can understand streaming video due to their high file sizes, but audio (even FLACs) is a lot smaller in general. The only reason I use spotify sometimes is to discover new stuff.
If only everyone was like that…