What is the author's tone in Psychotic Reactions and Carburetor Dung by Lester Bangs?

Bangs' tone is highly combative throughout most of the book. When dealing with a band he does not like, Bangs is often insulting. He frequently refers to the members of Led Zeppelin and the Rolling Stones as stupid, for instance. Bangs also jokingly suggests that he will kill James Taylor if he ever has the chance just because he cannot stand to hear another one of his songs. Even when Bangs interviews his primary musical idol, Lou Reed, he cannot help becoming embroiled in a heated argument. Bangs does not even spare himself, as he often exposes his own inadequacies and frustrations, many of them sexual.