Yeah, that's why TFs are unique - non-human characters have a huge role here. And audience is ok with it, don't forget about billions of money movies grossed. Every time I go to the theater I hear, how ordinary movie-goers discuss TF characters, I see it in social networks too, people aren't so deaf and blind, as you think. Also TLK has sufficiently lower attention to TFs and has box office problems. Critics obviously don't like TF characters, but it says unambiguously about their intellect and competence. I didn't see any normal review, where authors fully objectively analyze any Transformers Movie!