Could you provide a source please? Were the videos making claims that taking Vitamin D would protect against COVID or some other misinformation, or were they legitimately talking about mortality rates of those with v.D deficiencies?

I think there is a clear difference in private platforms stopping the spread of misinformation (you aren’t free to use their platform to spread information harmful to society) and what happened to Galileo.

But I am making an assumption because I don’t actually know what videos you are referring to.