In general, I've seen some people in these AirBnB discussions saying that they're "natives" to the land. Historically, the land in Vermont belonged to the Abénaki and Mahican Native Americans, who were mostly wiped out by white people taking their land. You can only be native to the land if you were historically and culturally there before anyone else.

To OP, all the stuff he's doing definitely doesn't sound legal and you'll probably want to contact the proper authorities/legislature. If he's planning to create lots of noise that disturbs the peace in a quiet neighborhood that's one cause for issue, and the average person can't just go out and make campgrounds and concerts because they technically own a property. If he tries to do stuff like that without a permit he will undoubtedly be getting in trouble.