That can happen for sure. You should do as little business with your registrar as possible. No hosting, just a domain and a couple DNS records. Your registra

That can happen for sure. You should do as little business with your registrar as possible. No hosting, just a domain and a couple DNS records. Your registrar is unlikely to do any automated patrolling and algorithmically stop doing business with you. Registrars don't have the profit margins to police every domain they own and the tech parse every type of content to decide you should be delisted. If they do decide that you are too distasteful to do business with, it will likely be a person, responding to a complaint of some kind. That is a significantly lower risk than an automated google sweep or say getting your email turned off because your YouTube channel was tagged by a bot.