I'm sorry, but "freedom of speech," as in the first amendment protects the right to express opinions. It does not protect misstatements of fact.

Not all people are rational animals that objectively acquire and then review all the information in front of them to weigh the merits of "5g versus virus." Sometimes, when you see a guy gaining a following by telling others that vaccines have secret microchips in them and that humanity has to fight 5g in order to survive, you tell him to go to hell and host his vile videos somewhere else.