I think it’s one of two things. The book was already set to release, there are contracts in place, and Jeb was not sure he was going to run for President when the contracts were signed by his father.
Or, it shows a Bush can be critical of their own, and that each Bush is his own person. If Jeb can say his brother made mistakes, or did some things differently than he would have, then the people who are afraid of the Bush legacy might give Jeb a chance. But, recently Jeb has been cornered into defending his brother, and also there has been quite a but if talk about how much Jeb admires his father and appreciates his upbringing. Reporters have talked about how Jeb and George will go
on about how great their dad is.
Two interesting things. When I first saw the clip of Jeb at a rally saying how great his dad was he mentioned his dad never had to raise a hand to Jeb. I thought that was a message to the holy rollers to stop hitting their kids. Not that all religious people hit their kids, I don’t mean that, but there are still quite a few religious right wing who think it’s a good idea. I didn’t even think initially about his dad’s opinion about his other son’s Presidency, or even his dad’s political opinions.
After hearing the reporters talking about how much the “kids” admire George senior, I was reminded about people speculating that Georgecito went into Iraq to finish what his dad started. That Little George had prove his strength to his father.
I remember my aunt once saying her mother was a tough act to follow. She said it half joking, but I think some children feel competitive with a parent maybe? Especially, if the parent is admired by many.