For me, the worst part is blackmail and account ban.

If you had legal presence in EU then new Digital Services Act[1] might a help for you. I am not sure if you could sue them based on that law, but you could maybe lodge a complaint.

  https://www.wolftheiss.com/insights/digital-service-act-explained-new-obligations-for-online-businesses-and-other-digital-services/

  https://blog.cloudflare.com/digital-services-act