They were said by far fewer, far less often, about crimes that were far less clear than anything Trump has done. The biggest crimes of the Bush administration were against international, not U.S. law (torturing combatants, the war of aggression, lying to the UN). Correct me if I’m wrong but the only domestic laws that Bush definitely could be proven to have broken were things relating to assigning government contracts via corrupt no-bid situations.
Unfortunately, it is altogether likely that he will die from the stress of a criminal trial before ever reaching prison. Fortunately, they rest of his family and the employees of the executives in the Trump Organization are young and have plenty of years ahead of them.