I’m mot sure I understand what kind of answer you are looking for. What did the Whig historiography achieve? Or the Great Man theory? Isn’t Critical Theory an academic approach that allows people in the humanities a different theoretical framework to approach the problems of culture, history, literature, etc? It’s been pretty successful in that, and while I believe that academic scholarship has some influence on world affairs, it’s generally the political zetgeist exerts more pressure on academic thinking than the other way around…
Lots of folks seem to have hobbies or put themselves through challenges that from the outside seem pretty masochistic. They generally claim they like the challenge, want to prove themselves or some other thing, but people who run the Marathon de Sable or swallow a Cessna light aircraft sure seem to gain pleasure from putting themselves through pain…