Cancel culture isn't real.
Neither Kappa Delta nor ACB lose any significant power or trajectory-altering opportunity by the tweet being deleted.
What's actually happening is criticism and critique, at some turns outrage, and mostly people getting on the internet with an opinion.
People in power are concerned about cancel culture because they don't want to be critiqued. People who are not in power are concerned about cancel culture because they think they are on the same level of the people being canceled.
It's sort of like people voting against their own self-interests.
Further reading:
https://time.com/5735403/cancel-culture-is-not-real/