But you ignored the second half of my post. The reason why we have time, place, and manner restrictions is because the act of speech, in and of itself, is harmful to others.
Again, that is simply not present with gun ownership. My owning a gun, in and of itself, is not harmful to anyone, be it in an apartment off-campus or in a dormitory on campus.
I appreciate what you are saying, but your comparison simply is not apt.
But the presence of a gun creates, in and of itself, the danger of gunfire. Even if it is not entirely analogous to your point about speech, there is a logical connection.
I don’t need to tell you about the slippery slope—which is pretty much all jurisprudence is.