Same as before. Domains are easy to block. Individuals are hard. It is the best idea and everything the devs are coming up with is retarded and temporary.

Domains are as easy to block as individual nip05s or any other specific identifier, i agree with that. But if the spammer is rotating domains, every time one gets blocked they can instantly switch to a fresh one. It would take relays time to identify the new domain as spam. So there would be a period of time where the spam leaks through. The moment the domain is blocked, they switch and spam leaks again.