At best, they were the Elon Musks of their time; most of them were landowners and the central issue they spent more time whining about than any other, by far, in the Declaration of Independence, was taxation. They didn't like paying taxes, especially if those taxes would be used back in England rather than in the Colonies.
And again; "natural" rights are a fiction. If you mean inherent to one's humanity, in the eyes of the law, then that's fine, that's how Locke intended it, but if you mean those rights are somehow present regardless of the law, you have no idea what you're even talking about, because rights cannot exist outside a legal framework. A fox does not violate the "natural right to life" of the chipmunk it catches and devours.
Which isn't about whether "rights" are a bad thing. It's just that they are human-created fictions we use to structure our societies, and have no greater existence beyond that. That can make them very good and useful things, but they do not come from anywhere but our own sensibilities. And thus, they absolutely can and should be changed, adjusted, amended, abolished, or created, as our sensibilities change with time.
And before you take issue with my use of "fiction"; literally all codes of laws are fictions, in their origination and creation. They're stories we use to structure our society. They do not have any basis outside the inventiveness of the human mind. Doesn't matter what laws, which country, they're all made-up.