Who cares
There is no corruption except in our minds, meaning that this concept is our invention, being a word, in which, if I understand it correctly, is encapsulated the eternal idea that something was in a wondrous state of affairs that was lost or, in any case, that degradation of some sort had taken place. My assumption is that, if we are the way we are, then there is no point in finding out who corrupted who because things could not be elsewise, though if we put enough thought into it we can find arguments for both sides that are equally valid. Yet we emerged out of nature, so we cannot do more than we have been given the ability to by our Mother, even if nourishing the illusion of evolving or suffering a downfall. We merely play our role, as different and self-destructing as it might appear at times, and if we march towards our perishment or corruption, it is fine because other species will live without us and other planets will replace the earth if the latter is eradicated, which is almost a certitude.