Is it a psychologist’s job to address false beliefs?

With the massive amount of disinformation floating around, from political to medical, most therapists will come face-to-face with questionable beliefs spouted by patients.
One client may insist that COVID is no more serious than the flu and the reports of the dead are grossly inflated. Another may claim that the vaccines are not safe, not effective or necessary. And then there are political conspiracies, from claims of massive voter fraud to beliefs in the existence of a highly-connected child sex trafficking ring.
While it is in everyone's best interest during a pandemic to insist on masking, distancing or remote therapy, at what point is a therapist responsible for educating a client on information that has no basis in scientific fact?
It...