Only, politicians have insinuated themselves into medicine, so that ship has sailed. When a medical professional is both sending strong political signals and their professional opinion is strongly aligned with the party line (and also conspiracy theorists), far out of line with the vast majority of their profession, that's suspect.

Joe Rogan's treatment is a single anecdote, and invermectin was one component of a "cocktail." He recovered, yes, but there's more noise than signal and most people recover from covid without any treatment.