To defend free speech you need to fight propaganda. Propaganda is literally the opposite of free speech. People being paid to say this or that is not free speech.
Just because you don’t like it or find it distasteful doesn’t mean it isn’t free speech.
How about people who are compensated to promote COVID vaccinations? Should that be disallowed?
The problem is who determines what is “truth” or allowable speech. Do you really want to live in a country where the party in power gets to decide this?