IT people have nothing to do with it. They just peck at webmin interfaces and pretend to understand what Microsoft tell them to do. If it were up to IT they'd just grunt and shrug, and the students would get on with it.
Decisions to directly counter to the core mission of the institution and stand between students and the education they paid for are way above IT's pay grade. For that we have a special class of random, low skilled people with an over-inflated sense of themselves called "policy makers" - a different cadre of unassailable, unaccountable centre of "shadow power" IT guys can only dream of :)
EDIT: [0] Although actually thinking about it now, I think the primary reason that policy was enforced had more to do with that letting people set up their own WAPs would undermine the 802.1x user<->IP mapping and the security folks had opinions about that. Dorm wifi was a mess because the sheer number/density of clients was awful regardless, but allowing just anyone to fight over channels would have made it even worse.
Things do need to change.
[1] https://www.timeshighereducation.com/features/we-cant-teach-...
Of course WiFi admin is different from rail transport from farm management, etc. That doesn't negate the fact that they're also similar in some respects, and affected in similar ways by prevailing culture and attitudes.
Because they're students, or because IT doesn't want random people running their own networks that are halfway part of the school's systems but independently administered?