Couple things:

First, Arin is a complete idiot. He is his own greatest counter-argument. He'll say in a video that "naturally, the player would do X" but, since he has the situational awareness of a sea sponge, is incapable of doing X. Aside from that, a lot of his points seem to revolve around the idea of the "video game design singularity" in which there is a single way to design a game element and you should only do that.

My other complaint is the fact that these people payed money to be shown a fucking Youtube video that you or I can watch right now. The only difference is they don't have the added benefit of leaving drunken, racial insults in the comments as they watch it.