Retorts to Harpers article seem to be arguing in parallel 1) There is no real cancel culture problem and letter is panicky 2) How embarrassing that some of the authors would even be associated with some of the co-authors 3) It is good that bad ideas are being exiled
I see forces (maybe occasionally too zealously) examining and interrogating our culture and then people who have long held cultural power pushing back on it and I'm honestly not sure what solutions they're offering other than hysteria about cancel culture.