I think he means the practice of shadow banning. Not that I agree there either, but I agree that it is abusive.

What if they just started shadow banning African Americans? Would that be illegal? This is a serious qeustion. If we have no idea on who they are shadow banning how can we tell if they are not being discriminatory?

The practice of excluding by race is not actually illegal.

Think about fraternities. Think about ethnic centers.

People have an expectation that because it's immoral in the obvious case, it's illegal.

It's actually not. Nothing stops anyone from making a group for, say, Chinese American newspaper reporters, or Lebanese car mechanics.

What's actually illegal is turning people down for jobs or housing over race.

The law would only be interested if the website was the only way to get to protected topics like a job board

It's also illegal in the U.S. to turn away customers because of their race. That's more relevant than private club membership.

I'm not talking about regular bans, I'm talking about shadow banning.

In case you're not familiar with the concept: it entails "muting" an account without ever notifying said account of that fact. They can still post, comment, vote, and everything else, but no one will see this content.

Sorry, I should have worded that a little more clearly, but my statement applies to shadow banning as well. In my view, it is totally unreasonable to make arbitrary software behavior like shadow banning illegal.