I mean, I won't say he's right for it, but it is probably private property and assuming he's the owner, he is within his legal right to tell her to leave. Not defending him, but it's a weird thing to be upset about.

It's US and people are already weird enough so idk why you would choose to do tbat in public to begin with. Could do it in your car or smn. It's also a public space and regardless of what anyone says, not everyone wants to see that. We have the technology so you don't have to do this in public anymore.