I get that impression too.
I can't remember if it was an interview or something I read, but he once trashed the movie Oblivion. He talked about being contacted by people who were going to film a Sci Fi movie that wanted him to be a consultant or whatever. When they told him the plot involved an A.I. from space invading the Earth to suck up its oceans to extract the hydrogen for fuel, he refused and basically told them the basic premise was stupid...as the universe is loaded with ice, Europa has more water than Earth, and hydrogen is the most common element in the universe. He didn't name the film, but it was obvious he was talking about Oblivion.
Mass Effect occasionally gets up to similar stuff (the great genetic diversity of humans..lol), so I would imagine a similar reaction.