I don't think YT bans usually affect your google account. I got falsely flagged by a bot for copyright striking a bunch of my own videos which resulted in permanent, apparently unappealable, ban of all my YouTube accounts on that google account but the google account still works just fine.
This should be illegal. It's like a diner owner saying he's going to deny service to all terrorists and then denying service to anyone with brown skin because it's how he determines who is a terrorist.
It's really sad. I lost one channel that I had been uploading content to for years. I supplied some small communities with, in my opinion, what were high quality tutorials and guides. All gone [see note below]. On top of all that, the videos which I tried to flag are still mostly up and I don't want to risk other accounts or my whole google account by flagging them. My only hope is to one day get in contact with someone at YT and ask them to take a look (doubt this will ever happen).
Note: I think I've got the videos backed up somewhere, but losing the channel kind of ruined the appeal of re-uploading. Lost the channel url, subscribers, and most importantly all of the video links across the web are dead.
What you described in your simile is a violation of Civil Rights Act of 1964 because it is public (as in John Q can walk in) business practicing discrimination based on a protected class (race, in this case).
