Tl;Dr the protocol requires there to be trusted token providers that issue the tokens. Who do you suppose are the trusted providers in the Google and Apple implementations? Google and Apple respectively, of course. Maybe eventually there would be some other large incumbents that these implementers choose to bless with token granting right. By its nature the protocol centralizes power on the web, which would disadvantage startups and smaller players.
I’m all for de-Googling, but… is it possible that Restricted in this context mean those apps have no data usage because they’re restricted from using it? It could be trying to say that the app is restricted, not that you’re restricted.