Working in the halls of UC Berkeley as a Bioengineering PhD student, I can attest that there are tentured faculty and researchers who are clearly brain damaged individuals.
Yes, we need to allow in dissenting voices to catch the small percentage of events that the sheep are ignoring. But the success rate on most "different opinion" doctors is worse than dying of Covid. Most end up like the Riverside docs (Dan Erickson and Artin Massih) who were quickly revealed to be complete whack jobs, but only after they accumualted 5 million YouTube views.
The attention these outliers get is way outside of the weights that their validity ever deserves. Everyone is entitled to an opinion. But unvetted extremists get way more attention for who they are and what they represent, not any underlying truths to what they are actually saying. This is a bad social problem