There's pro-AI censorship and then there's pro-social media censorship. It was the X offices that were raided. X is a social media company. They would have been raided whether it was AI that created the CSAM or a bunch of X contractors generating it mechanical-turk style.
I think the HN crowd is more nuanced than you're giving them credit for: https://hn.algolia.com/?q=chat+control