There is no longer any doubt, the State Department has confirmed a significant amount if misinfirmation and disinformation is coming in to the US from Russia.
Doctors who reitierate misinformation are not just ignorant and unprofessional, they are also a grave public health and national security threat.
This is not a matter of free speech. It is the unwitting dissemination of propaganda from a foreign adversary. The doctors who spead disinifrmation must be held accountable for the threat they represent.