Most people on HN who advocate regulating social media don't only want to prevent those platforms from showing targeted inflammatory content, they want to make all algorithmic feeds other than strictly chronological illegal, as well as moderation of any legal content.

From that point of view, Hacker News is little different than Facebook. One could even argue that HN's karma system is a dark pattern designed to breed addiction and influence conversation in much the same way as other social media platforms, albeit not to the same degree.