You're painting things with too broad of a brush. Not only do things vary by professor and institution, the issues you raise aren't particularly relevant ir prominent to a course on Shakespeare's Tragedies, Ancient Rome, most of the field of linguistics... I could go on.
Critics in this area have latched on to a few prominent outliers or bad actors and used that to create a false narrative about the entire system.
You are right. What is happening in the major universities is not representative of the majority of universities. Therefore I agree that, depending on where you look and how you look at it, the state of the humanities is largely intact.
I think, though it is a leap, that the current <insert-dogma-of-the-day> will extend downstream but who knows...
This is a disingenuous attempt to dismiss a valid criticism by categorising it as a flame-war topic.
The humanities today, in general, are by no means either tolerant or open (at least in the English speaking portion of the globe).