Tangent: when looking up Mamoru Oshii I found an interview where he compared the work culture at Studio Ghibli to a communist dictatorship (“communism is when capitalism”), because people of the 1960s “Anpo generation” (like Miyazaki) have “no morals” when they believe their cause is just…
The book is apparently written by the same Mamoru “Studio Ghibli is like the Kremlin” Oshii, who is most well-known as the creater of Ghost in the Shell.
From that same interview I found, I didn’t get the impression however that he would just make shit up about him and try to ruin his career, he said it would be a loss if Miyazaki (and another Ghibli figure) stopped making films. The book itself, going by reviews, seems to be even-handed about his short experiences at Ghibli.