Nah, they're completely separate communities, so no real link that I can see there.

I dug around a bit, and one of the sites he was using to host the images was some weird 4chan-like image board. But it seems like he may have been trolling them, too, because even though it's a degenerate board full of racist garbage, it's not otherwise full of CSAM, and his posts were also deleted from that board eventually, too. So I don't think they were willingly hosting those images, either. I mention this because I saw some people calling to ban links to that domain, which probably should still be done because it's a trash website, but not because it's a CSAM haven of any sort.

It makes me think that this isn't targeted at any one community, just some random weirdo trying to make the internet a worse place wherever he can.