You can say that about any tool of power or oppression
A lot of laws that are very necessary are tools of oppression, at least potentially. Yet no one is arguing that they should go. I guess my main point here is: it’s best to describe the law in terms of its necessity. Is it necessary or useful to require pre-notification/approval of all mass meetings of people (regardless of the purpose even)? I think it might be useful. Is it necessary to have SOME regulations in place for mass meeting (like forbidding them around daycare facilities, for an obvious example)? I think definitely yes. Now, if a government was actually oppressive and unrepresentative of people, and the only way to protest was to do it at a daycare facility - I would support it, but such circumstances are extreme and at that point permits and approval is irrelevant: if the government spits on people, you can spit at its permits.
I don’t see it that way, but okay. And tyranny of majority could be interpreted twofold here: it’s probably a tyranny for the majority against protesters to tell them that they can’t protest at the university, but it’s also tyranny of majority for 10000 protesters to tell 1000 students of a university that they don’t care about their wish to study in peace? No?
Surely if you live in Iran or something just as oppressive, protesting against the government is probably more important than studies and even in the eventual best interests of students. But at that point (as I mentioned), permits and restrictions are irrelevant: go protest in Iran without a permit regardless or whatever. You don’t need to take opinions of something as ridiculous as Iranian government into account.