[peaseagee]

The links you shared talk only about spam. They do not talk about illegal content like CSAM.

[digitalbase]

There is no single approach as no central moderation exists. That's a feature.

So it's to relay operators in combination with WoT (web of trust) on the client (and sometimes relays)

[peaseagee]

So relay operators must also moderate everything that goes through their relay? How?