The people in the "center" are in part reacting to their corporate employers not being required to significantly improve working conditions in the office, and a general prohibition on confrontational politics in the workplace. Plus the implicit threats if anyone is required to do something. So generally I blame two things, one, corporate lack of leadership and consequences, and two, ordinary people who don't want to have to be the ones to confront anyone about something they're already getting pressure to handle by not handling.
I also blame the entire medical system for completely caving to their right-wing corporate owners and lawyers and not requiring continual masking in medical situations until COVID-19 is entirely eradicated.