No indication of windowless dorms at Munger's alma mater while he attended, the University of Michigan (someone correct me if I'm getting this wrong), so my only guess is that Charlie became self-righteous about younger generations finding themselves more immersed in tech than the world around them.

...and removes windows to force people outside, thinking somehow that'll solve the problem?

It only shows that everyone who's sharp in one way is utterly clueless in another. My guess is that people will end up spending more time depressed (e.g via SAD) as a consequence of getting no exposure to nature and daylight in their own rooms while cramming as opposed to making themselves go outside, as Charlie intended.

I wonder if these outcomes will be measurable once a generation of students has made it through?