Okay. Now imagine he's doing it out on the public sidewalk and not using bar property. Would it be justified to use physical force and steal the clipboard owner's property?
Where did stealing property come from?
Also the guy with a clipboard is only showing those notes to a couple people at a time after they journey to his location, which makes a pretty big difference for the amount of disruption. There's no magical thinking about the internet being special. The social norms are different because the situation is so different.
What about this imaginary scenario has anything to do with OP scraping their college’s student directory to populate their rumor mill website?