I'll happily spit venom at Scott for the sake of comedy, but I don't feel like it's entirely his fault. After all, he didn't write Alien Covenant or Prometheus. Though he did have say in what got filmed, so he isn't blameless either. I can't say for certain that he's going through a massive ego trip because I don't have all the facts, but that's the image I get when I hear what happened to Blomkamp's Alien 5 and look at the creative choices he's made in Prometheus and Alien: Covenant. Unless something comes out that suggests otherwise, that's just the impression I am going with.