Let's consider two academics. Academic A is constrained to traditional rational discourse and Academic B is constrained to post-modernism. Which of these two is going to publish more articles? The person that must meticulously build on prior research, or the person who can publish non-falsifiable articles with no chance of collision with prior work? Which of these two is going to get more grants for their institutions? Which of these two is going to get promoted and get tenure? Which of these is going to be in charge of advising the next generation of graduate students?

Consider Steve Jobs answer to why Xerox failed and meditate on the implications in higher education:

https://www.youtube.com/watch?v=nHaTRWRj8G0

Or consider this scene from Mad Men:

https://www.youtube.com/watch?v=QKcneQ6N50Q&t=39

Different industry, same phenomenon. Pursuit of truth and a notion of objective reality constrains discourse to a very limited band of possible outcomes, let alone actual outcomes. If you remove those constraints, the floodgates open and the signal will immediately be drowned by intentional noise. And if you don't play ball, your institutions will inevitably replace you with someone who will.