I'm not sure I understood you 100% but you're saying because the account copy pastes the post it shouldn't get rewards? There are 2 issues with that, first is that the posts were not 100% copy pasted and there was also some work done regarding the calculations. The second is that regardless of quality of posts, there are people who want to vote for those posts and they do so with their own stake. Just like every post that is voted. 99% of the high paid posts $20+ are overpaid IMO. Very often there is no difference between the amount of work done on them and someone new, except for the network and, especially if it's a whale, hoping to get votes back.

Those votes are only countered by using downvotes but that is effectively a way to negate stakes that aren't big enough. In every stake system the higher the stake the higher the power. But the DVs create an even bigger gap where big enough stakes can neutralize smaller stakes completely. If someone were to get 50%+1 of all Hive they could, in theory, neutralize all other upvotes and never be fully neutralized themselves. Obviously that would be extremely difficult, in practice,  and destroy Hive's value very quickly. Furthermore, these rules that are trying to be enforced by DVs are decided by those in power and they don't have to answer to anyone else, unless they really piss off other powerful users. If someone has a vendetta against someone else, they can destroy them. It's what happened to me and others by azircon. The rules are up to those in power and they aren't applied equally.