Yes, because Senior House was full of Trump voters /s
I think on this issue we can take administration at their word. They prefer clean high-performing students to drug-using mediocre students.
Do I think that's a damn shameful way to frame the situation? Sure. But straight-shooting administrators who just simply don't care about counter-cultural values -- one way or the other -- seems like a infinitely more likely explanation than sinister political plot to undermine free-thinking individuals.
Don't ascribe to political conspiracy what can be explained by bean-counting and political indifference.
The most meaningful change comes from within.
There's a reason dictatorships spend a lot of effort trying to stamp out internal enemies.