It's amazing that horror films, of all the genres, have undergone such 'serious' analysis in the academic film studies arena. It tells you a lot--considered to be a kind of low art form, it attracts serious scholars who, rather than applying common sense or rational thinking, literally invent whole vocabularies to disguise their utter lack of knowledge and general cluelessness with regards to these staples of 'pop' culture for the 'little people'.
It's classic academic constructs. It's obvious that Clover, and she's not alone, is either incapable or unwilling to just say what she means. Instead, and in order for a university press to pick these things up, the ideas have to be draped in dense, unreadable, and often laughable language.
Are there interesting ideas here? Yes, certainly. Are they easy to understand? They can be, but not here. You may feel like a moron after reading about your favorite slasher, but don't worry--you haven't been exposed to the careerism and isolation of the cinematic ivory tower yet.
The book can be half as long if they tried to make it accessible to the people who actually WATCH horror films, but it is instead geared toward people who want to study the people who watch horror films, from a detached perspective, armed with a dictionary and a black turtleneck.
I would actually recommend this book for horror fans, but with reservations. It does try to get at what is happening in this genre, and why we watch these movies. But don't feel bad if you laugh at some of it--that's part of the real world.