This has been on my mind for a while and I couldn't find a clear answer anywhere else. Blocking and reporting features matter a lot. Platforms that take moderation seriously are worth the small effort to join.
Good moderation is the single biggest factor separating quality adult chat communities from garbage ones. I've had the best text-based experiences on forums rather than dedicated chat apps ironically.
Anonymous chat is mostly an illusion unless you're running through a trustworthy VPN and using a burner.