I'm not accusing him of it, at least not till I see convincing evidence. But either way I don't think porn spam is good for nostr while it's growing.
Discussion
Like with any spam, there's no need to fixate on the porn — and again, anyone can be a "spammer" since it's technically easy to do. The "seriousness" of the act should be judged not by the type of content in the spam, but by the load it puts on the network. Otherwise you'll end up claiming that a black dick is worse than a DDoS.
Impact.
If the network gets DDoSed or spammed with dick pics, it doesn’t matter, as long as the impact is mostly the same to users. (Nostr becoming hard to use)
In this case the impact was on clients, not relays