I guess this trend is now spreading out to non-Greek orgs as well? At least one I have heard of:
Columbia Marching Band Shuts Itself Down Over ‘Offensive Behavior’
https://www.nytimes.com/2020/09/15/n...-shutdown.html
This dissolution appears to based on, not attitudes and behaviors of current members, but of things that have happened over the past 100+ year history of the band. So, like others have commented on fraternities and sororities, rather than make sure these things are no longer happening, and be a model of change going forward, they would rather just end the whole thing completely.