Yeah, but he also criticized Jurassic Park despite the fact that most of Jurassic Park's OS views were genuinely Unix (SGI's IRIX, to be precise):

http://www.youtube.com/watch?v=7y12_WrlPaw

In that clip, you can see fsn, which is a genuinely real 3D file manager for IRIX:

http://www.youtube.com/watch?v=zaRHU1XxMJQ

Granted it's fair to say that the average theme park wouldn't be running IRIX, but Jurassic Park wasn't the average theme park (movie quote: "no expense spared"). So I think some of his criticisms are completely misplaced.