So, pretty much, don't read this? I started out reading it and thought, wow, this has not aged well, and then I read the verso, which said the date of publication was... four years ago. Which was pretty much when my internal voice went, 'Oh... no. This is going to get worse, isn't it?'. Spolier: it did.
Did not finish. Really exclusionary of pretty much anyone but cis gay males, pretty much every quote on bisexuality is about not liking labels or actually identifying as something OTHER than bi, either because of being being mislabeled or discriminated against (page 27-28), gender essentialist 'lesbians like vaginas' 'gay men like... big hairy men with big willies' 'penis? check! ...gay men are.. male'(page 51), 'lesbians like vaginas' (page 67), transphobic (so many pages), 'intersex is not so much an identity, as you can't really choose it' (page 37), conflates homophobia and transphobia as basically the same thing without mentioning the transphobia rampant in the broader queer community (pages 72-92). Noped out after genuine anti-semitism on page 111 'Not being funny, but these guys (Jewish people) kinda started it' (about religious homophobia).
To eliminate any confusion bout the author's name, the author came out as transgender after publication, so the first name on the cover is one that shares the initial J with the author's preferred name, Juno. My reaction to discovering this development was thinking that I really hope Juno works through the utterly pervasive transphobia that is inescapable in this work. Carrying that is toxic. But the fact that the author has come out as transgender doesn't make this work any less transphobic. In fact, it's worse, because it makes it harder to argue the damage this book can do when it's coming from a now-out transgender person, something I will be doing with my library system shortly.
In summary - this book would have been revolutionary ten or fifteen years ago, because nothing like this existed. It still would have been toxic. Time and correct terminology has moved on, but at its core, this would have always been a work that placed more emphasis on trying to be crude and cool to appeal to young people, which is a tragic mistake. Anything that tries this hard is never going to be cool in the eyes of a teenager. Add to that the spadefuls of misinformation, glossing over of history and hate crimes, erasure, exclusion, and casual super gross misogyny for the sake of jokes ('Lesbians like vaginas. They don't even want blokes watching. I KNOW, how INCONSIDERATE.' - page 67), and this is a book that doesn't even come close to matching the promise of its beautiful, bold, inclusive, balanced cover.