Disclaimer: I'm a straight cis woman who knows nothing about queer theory.
I found this confusing. Starting with the title - this isn't history, it's theory, academic theory. Presumably treated quite superficially - it covers a lot of ground and is a quick read - and lightened by the pictures, which were fun and interesting. Four days after reading it, I'm not sure how much I took in or how much I understood, and knowing nothing of queer theory, I don't know enough about it to know if it was "good" or "sound" or not. It was thought-provoking, and gave me some things to think about I had never considered before.