give me the firehose(s), i'll decide what to do with the water.

There's some wiggle room here if you're running your own relay

True, WoT on the client side should exist too. But if relays don’t integrate WoT, then they won’t be able to prevent the storage of all that spam. It’s a way to help relay operators avoid bloated storage costs.

If operators still let spam through, your client’s local WoT can still filter out the rest of the spam.