When I say, "must read", I mean that you will want to read it.
It seems that when you say "must read" you mean that you want me to read it.
In which case, being a free person, I'd like some context about why it is that you'd like me to read it. In particular I don't know if I'm among the people who you think should read it.
Furthermore the sexual abuse allegations in particular make me suspicious about the book. I happen to know something about sexual abuse, and one of the things that I happen to know is that a lot of people very vocally claim (and sincerely believe) they were sexually abused who weren't. Search for False Memory Syndrome. Of course lots of people actually were abused as well. Without research, I'm not going to judge whether I believe her memories to be reasonable. But I'm also not going to take them at face value. (OK, I just did some research, if [link|http://www.adultfyi.com/read.aspx?ID=12540|http://www.adultfyi....ead.aspx?ID=12540] is accurate then I believe she probably was abused.)
As for "looking up" to Tony Hendra and his ilk, what does that mean? There are lots of people who like aspects of the culture he was part of who do not agree with his decisions and choices. They will probably not get out of this book what you're hoping they will. Similarly there is also lots of crap done by purportedly upstanding people who lots of conservatives admire. Likewise stories about their excesses aren't going to convince conservatives that conservatism is awful.
In any case I suspect that I'm not in the group who you think should read this. I wasn't part of the drug culture, never saw This is Spinal Tap, didn't read the National Lampoon, and frankly had to google the name Tony Hendra to figure out who he was.
Cheers,
Ben