The issue is that he comes off as a condescending prick. And is relatively easy to make fun of for his silly saddle angle and ludicrous bike.The interview being discussed has Chris Porter against 29" wheels, against pointless new standards, against fancy carbon parts for the sake of it... but people still think he's the devil because he wants longer bikes. A bike which he essentially designed for himself - and now has a following.
He doesn't come across as someone who says "different strokes for different folks, I like this, don't care what others think as long as they're having fun". He bashes North America for it's "lame trails" that don't warrant a bike like his monstrosity, basically implying that the rest of the world is wrong.