There was a fine tradition followed by all Presidents that when they are out of office, they refuse to involve themselves in petty politics and criticize the President. Bush's father followed this example well, never talked about Clinton.
The Bush family has class. Actually, it seems to have become a dem/republican thing. The dem exes trash Republicans at every opportunity. The Republicans care more about their country and the office of the Presidency.
Don't forget Carter. The only Democrat ex-presidents who kept their mouth shut was JFK, for obvious reasons, and LBJ who retreated back to TX.
I was hoping that Bush41's class would somehow rub off on clinton, but there was nothing there to rub.