Advertising is speech by corporations, so there's a public interest in regulating it. What's the public interest in regulating your speech, or mine, just because we're on a platform that has an arbitrarily high userbase or uses algorithmic sorting?

Why should it be illegal for me to like fishing videos, and want to be shown more fishing videos if I watch fishing videos?

Or to post at all online without a license and account tied to my real identity?

If I run a car forum, why should it be illegal for me to ban Nazis just because Nazi speech is legal in the US?

Or if my forum gets some arbitrarily large userbase, why should I be forced to give control of my forum to the government to be regulated as a utility?

All of these are rational, likely results of policies that people on HN have advocated, along with banning social media entirely (which would destroy one of the few truly free hypermedia and communication models out there.)

I don't trust the intentions of people who want to regulate social media and I absolutely don't trust the intentions of governments.