Maybe the problem is that most of the community still suits the current situation, because changing the rules would definitely have a very bad effect on their interests. But even if everyone in DT1 agrees on something, can there be a change in the rule that says "it is not allowed to participate with more than one account in signature campaigns"?

Even if such a rule existed, those who are a little more intelligent would certainly still bypass it. The thing is that the rules may change, but unfortunately people will remain the same. The old truth is that to some, this forum is just a way to make money, but it's also the old truth that money drives the world, a forum is no exception to that rule.