What does CSAM stand for?
One irony of nostr:nprofile1qqs0m40g76hqmwqhhc9hrk3qfxxpsp5k3k9xgk24nsjf7v305u6xffcpp4mhxue69uhkyunz9e5k7tcpzemhxue69uhk2er9dchxummnw3ezumrpdejz7l3vw43's CASF (CSAM activated soft fork) is that users would have to go and see that there's ndeed CSAM in an OP_RETURN, which AFAIK would actually be illegal. (I know I certainly won't do it.)
Discussion
Child Sexual Abuse Material.
(Luke proposes that if someone includes CSAM in an OP_RETURN, the blockchain should be rolled back, and that should then be used as the launch point for an “anti-spam” soft fork.)
Which is antithetical to everything bitcoin stands for. No rollbacks. It's not ETH.