Kaminski's book is thoughtful and very well written, for a critical look at the complete films 1-6, as well as exploring the unfilmed sequels it leaves no stone unturned.
It is not a lucas hate piece, nor a suck up to lucas piece. But it is a clear and concise view of how the script writing for the originals were handled in an atmosphere of collaboration and friends helpings Lucas. The originals were strengthened by having other directors and writers help out, doing the prequels by himself was a huge mistake, and essentially hubris that destroyed the franchise.
But the catch is that the prequels and indiana jones IV made more money than the originals, so in some peoples minds lucas was proven right.
There was a lot more collaboration on indiana jones IV but the story idea and the mcguffin sucked imho, not saying Ford is a horrible actor he is excellent, and Spielberg is a good director despite war of the worlds and crystal skull. I think people are willing to give Spielberg another chance at making another good film, as for Lucas forget about it.
Even though the public consensus is that Revenge of the Sith was his redemption and a good movie. I was watching that on tv for a few minutes the other day before changing stations and laughing at how bad the acting and dialog was during the duel between kenobi and vader on mustafar.
It looked like Mcgregor had difficulty delivering his laughably bad dialog with conviction and heart, he is a good actor and almost pulls it off, but then hayden opens his mouth and the performance drops down into the sewers,lol.