Yes, this was the main theme of the game. To Arthur and the rest of their camp, they are the embodiment of the American dream: living off the land, doing whatever they want, working hard to succeed, living a simple life. They see "civilization" and the justice system that comes with it as a false promise, taking freedoms away to somehow guarantee more freedom. And they see the industrial revolution as creating the largest gangs of them all, but calling them "corporations". So big that they can pay pinkertons to bully workers, while also paying the law to look the other way.

RDR2 really is a work of art. It's not 100% historically accurate, it's "the lie that makes us see the truth".