This is a generalization and definitely doesn't apply to all unmodders, but I have a feeling that some of them knew nothing they said would change anything, didn't want to hang around ocr anymore, and just decided to see how much damage they could do before getting banned.
Usually I have a very anti-establishment mindset when it comes to ocr but truthfully, unmod sucked. And yes, I spent some time there. like three minutes.
Remember when the remix reviews forum was the most active one? yeah, those were the days...