I feel like "just issue a ban" trivializes the complexity of this: banning one account does basically nothing, and they can just create a new account. Multiple people often have the same name, so you can't just ban everyone with that name. It's trivial to take new pictures, etc..

That leaves, what, asking a private company to do facial recognition scans on all new users? Requiring them to present official government ID ala the recent EU laws?

Perfect is the enemy of good.

Honestly I’d prefer a dating app that checks identity and prohibits duplicate accounts