Bob's a turbo Kaiju autist, I can 100% believe he watched the recent Godzilla movies multiple times. He saw Pacific Rim something like 6 times in the theater. The only movie I can recall him admitting spending a similarly exceptional amount of money on was The Avengers. He adds in all those nonsensical themes and plot elements that no one else sees in these movies because he's deeply insecure that big dumb monster blockbusters aren't treated as a serious art form (and that he, by extension, isn't a serious cinema critic), so he adds in all the headcanon he's spent the past 3 viewing sessions building up to try and turn schlock into kino.
He's too immature/autistic to embrace the movies for what they are, so he tries to make it sound serious. That's a pattern with Bob in every aspect of his life, whether it's his obsession with needing a gritty live action Mario movie, or the Paradise Lost Care Bears, or his embarrassing attempts to invent "sexual training techniques" taught to him by lesbians that anyone who's ever had sex immediately recognizes as bullshit. It's all part of his pastiche of maturity that he puts up as a front for his manchild ways.