nah dude is smart. Maybe not in the way you define "smart".
Mike McCarthy explained him- "eccentric"
If Rodgers was a PHD in Psychology, no one would care what his takes on vaccines were. And i think his fame was taken advantage of in certain instances- specifically when it was announced he was in the "running for Kennedy VP " - he had NO IDEA that was coming. Kennedy never once told him he was thinking of him as VP.
It was done by Kennedy team for "views".
side note- plenty of NFL players go down to CR for ayahuasca treatment - this doc has Rodgers, Jordan Poyer ( Bills SS ), Poyers mom and one other NFL player on 3 day trip.