What do you think of the ending of Animal Farm?

We know that the whole book mentions how animals are friends and humans are enemies, but at the end we see how the leader of the whole farm (Napoleon) and the rest of the pigs end up with the same mistakes of humans at the point of changing the name of the farm to Manor Farm as it was called before, what do you think about this?

I think that what Napoleon did changing the farm's name to the original one is a prove of what greed can do. He and Squealer slowly start changing from animals to a human copy as power get inside of them, they wanted more without caring of the other animals of the farm which were hungry and exhausted of the alarming amounts of work that these two pigs force the to do with the pretext of "it is all to the farm improvement", at the end they just worsen the farm state and the animals all to get more and more power. It shows what avarice can make that even they trade with humans and lived like ones, they lied and deceived their own community and even changed the "Seven Commandments of Animalism" until it became just one, one unfair which just favored them.