No. He wouldn’t be happy with ActivityPub as well. He imagines a social network where no one can perform any moderation. He favours Nostr for exactly that reason. Bluesky has got moderation (just like the Fediverse) - which he dislikes.
So? Like Usenet was back in the day before it became a pirate haven. Then email lists became it. LOL, People tend to ignore the extreme nut jobs regardless. I never saw any child porn on Usenet, but then I didn't go looking for it. No doubt it existed too.