I think you are conflating two separate incidents. There was a johnny cash volkswagen commercial a few years ago featuring mixed families, but it didnt premier during the super bowl, and there was no controversy about it. At least I can't find a single negative piece about it on the first three pages of a google search. Then there was a johnny cash super bowl 2020 commercial, by the fox network i believe, which was just a spot celebrating the U.S. flag set to the cash song "ragged old flag". People were pissed about it because they viewed it as a swipe at colin kaepernick and police brutality protesters.
As for pete seeger, he was an actual card-carrying member of the communist party. More extreme than most folks out there today. And i dont say that in a negative way, as i too believe that workers are entitled to EVERY BIT of the wealth they create. Full stop. Seeger left the party itself eventually, but i believe he remained a Red / comrade his whole life - just unaffiliated with any particular organization.
