I think you are granting false neutrality to this speech. These misinfo folks are always selling a cure to go with their rejection of medicine.
It's a billion dollar industry built off of spreading fear and ignorance, and youtube doesn't have any obligation to host their content.
As an example, for 'curing' autism, the new grift is reject Tylenol and buy my folic acid supplement to 'fix' your child. Their stores are already open and ready.
To finish the thought, scientists at the CDC (in the before times) were not making money off of their recommendations, nor were they making youtube videos as a part of their day job. There's a deep asymmetry here that's difficult to balance if you assume the premise that 'youtube must accept every kind of video no matter what, people will sort themselves out'. Reader, they will not.
And silencing these people only lends credence to their "they don't want you to know this" conspiracy theories. Because at that point it's not a theory, it's a proven fact.
These people will claim they were 'silenced' regardless. Even as they appear with their published bestseller about being silenced on every podcast and news broadcast under the sun, they will speak of the 'conspiracy' working against them at every step. The actual facts at hand almost never matter.
Even at a press conference where the President is speaking on your behalf they'll speak of the 'groups' that are 'against' them, full of nefarious purpose.
There is no magical set of actions that changes the incentive they have to lie, or believe lies. (except regulation of snake oil, which is not going to happen any time soon)
In general, you can't argue or 'fact' people out of beliefs they were not argued into. The best you can do is give them a safe place to land when disconfirmation begins. Don't be too judgy, no one is immune to propaganda.
