I simply don't believe that any substantial number of voters think January 6 wasn't an insurrection. Trump openly spoke for a full month beforehand about how he was going to overturn the election, and continues to this day to insist that he should have been allowed to. People who claim it was a protest that got out of hand are not confused, naive, or in a media bubble; they're just lying.
My college educated father said J6'ers were just tourists. He denied there was ever a noose involved. I had to send photos.
The media bubble is something these people seek out. They avoid sources that offend them. They don't go to original sources or seek first hand accounts. When confronted before they get the talking points their responses are rational, then after receiving orders they'll pivot on a dime.