Client Devs don’t want to give users the ability to filter on NIP05s. It could be solved with that but apparently blocking whole domains would be worse than all of us getting spammed non-stop.
The spammers would just include nip-05 as part of spam. It's a whackamole
Let them try. Then it’s on NIP05 providers to keep their service clean - not too much to ask for paid service providers. Then they have to fallback to their own domains for NIP05 which is cost and friction they can’t keep up for long before we block them all.