He was always this person all along. Someone who knew him said he’d join any cause he could be in front of, and I think he makes a lot more sense in that way. He doesn’t give a shit about the environment, and probably not vaccines or his food bullshit, he just gains supporters by contrarianism.
From what I could gather the book you reference isn’t some new research or anything, its sole virtue compared to other environmental works is in the name attached to it, a name he banked off of as an author, lawyer, and provocateur never contributing more than that
He got the benefit of the doubt because of his family. But now the real him is coming out and he’s nothing more than a junkie murderer with a “brain worm”! (Who likes to swim in raw sewage!)