The book, in the version I got, is a bit outdated. However, it has some interesting parts that, at least for me, were worth considering.

Nonetheless, this is not for everyone, for it has strong opinions and a very clear ecological agenda. That, in itself, is not a bad thing. But you're not going to get a completely unbiased picture of its main subject. However, given that we are facing such a humongous environmental crisis, the taking of strong stances may well be the only possible course to force a change in the reader's perception.