I don't understand where the expectation of creative originality in AMVs comes from. Not to say it doesn't exist, but I think it's fair to say that AMVing as a hobby and community is not here for its sake in general. It's by and large populated by anime fans who want anime videos.
I don't see what's wrong with it, either. In fact I wish people would stop trying to reinvent the wheel as a means for itself. It's nice to reinvent, but unless you're in it for the process, you probably shouldn't do it.
Likewise, I sneer at people who equate art and merit with technical skill, visual complexity of the result and effort. Which is why I enthusiastically (and genuinely) welcome so many AMVs and editors who, in a way that's acknowledged or otherwise, pursue pure & idiotic dadaism that chips at the logs of the unneccesary, unhealthy pretension stuck in the eyes of our 'artists' and 'technocrats'.
The Birds are using humanity in order to throw something terrifying at this green pig. And then what happens to us all later, that’s simply not important to them…