Ok, so everyone should be allowed to broadcast, promote and advertise: "all white people are inherently evil and criminal and should all be exterminated, go out and shoot every and kill every white person you see!"?

In my view: yes. You can say whatever you want, and if you say stupid things people will think you are stupid.

Then a hundred years after you were burnt at the stake, it turns out you may have had a point.

With speech, obviously there’s going to be a line after which you descend into madness and that line is legally speaking usually drawn at directly inciting violence. That’s what is considered “spreading a harmful message”. But by censoring COVID, Youtube is moving this line quite a bit, to a point where we’re talking nowhere near as harmful messages. The point is that unlike with someone saying “kill people”, here it’s not that obvious whether an idea is “wrong” or “right”.

There's more things banned. I cannot put an ad on TV that all gay people or Christians should be fired and shunned from society, even though that's not inciting violence.

My point was more that there's limits to free speech when it's harmful as a response to someone who said that everything should always be allowed everywhere.

You can debate whether that should include Covid misinformation and to what extent, but I would say unsubstantiated claims like vaccines will make you infertile are harmful to public health and are definitely candidates.

> I cannot put an ad on TV that all gay people or Christians should be fired and shunned from society

You absolutely can both legally, and practically at least the first and probably the second. Heck, the former has been part of the main editorial content on some TV outlets, not just advertising.

Are you saying that's not allowed now?

In most western countries you aren't allowed to put something like that on TV and would probably end up in jail.