What I find most interesting are those arguing against "cancel culture" and the revival of heretics don't find issue with things like the "critical race theory" boogeyman and the "don't say gay"-style bills preventing teaching of sexuality topics. It's interesting how consistency of free thought isn't really the important thing here.
> In the late 1980s a new ideology of this type appeared in US universities
I don't think this was new. Liberality tends to go hand in hand with seeking reality, as discovering something and then adopting it requires intellectual big-tentism. Perhaps the author bemoans the rise of bureaucracy within the university, which has demonstrably increased?
My concern is that these arguments about moral puritanicalism aren't without merit, but that they are often ignore the cancerous alt-right, which is bereft of morality beyond racial nationalism. Perhaps the cancel culture creedal concern is considered to be salvageable.