I've never heard of Interstellar Marines, though they do look similar.
While there is some merit to their criticisms of sci-fi related stuff, I find a lot of what they say could be turned around and applied to their practices. It's all relative. When someone is unfamiliar with a subject they miss out on the subtleties. So from an artist's perspective, sci-fi is a rehashing of old ideas and visual concepts. But from a perspective outside of art, artists just sit around making the same strange and uncomprehensible things. But people get offended when you point out that what they see in work is not necessarily what other people see. I told my drawing instructor that from my perspective his work looked like the same old print done over and over again. He got very defensive.
There is merit to going to art school, but you could probably learn how to do a lot of it from youtube. Its cheaper, anyways.
