1) It's a character, not an actual opinion. When you view "The Angry Nerd" you expect someone being...well...angry. Frankly it's done to death and I have no interest in watching another guy faux rage against Intellectual Property that has little relevance to his life save getting hits.
2) It's a parody. He rags on the Doctor's inability to use his brain to overcome adversity and the clip they show is his jury rigged TARDIS console from The Doctor's Wife - which invalidates the point being made, if the point was being made seriously.
3) I am pretty much immune to other peoples criticisms. I like what I like.