I agree with this. I think the infamous 13 Seconds, the Buffalo shooting, the heartbreaking Miami loss with 11 starters down and the rest slowly dying of dehydration, Von going down in December, >30 dead in a Buffalo blizzard, playing a home game in Detroit, the Hamlin disaster/game nullification, and Diggs causing drama at select moments and press putting cameras in their faces asking them to explain each of these situations, has absolutely gotten in heads. It's not one thing, it's the body of work.
The team needs a relatively normal season to put this crap as far behind them as possible, mentally reset, and remember how good they are. And for God's sake the key players need to survive until the playoffs.