I don't think Bush post 9/11 is comparable because nothing is comparable to the Trump election campaign.
She doesn't hold public office any more. I suspect her position is that no more fucks are given. After the way she has been treated, I can't say I blame her.
People don't need to hold public office to be civil and decent human beings. Obama criticizes Trump all the time, and he's honest about it but acts like a civilized person.
She still was the democratic presidential candidate and first Lady among countless other things. Regardless my point is what she said is disrespectful to the wrong people. Sure it pisses off crazy Trump supporters who will argue everything.
But it gives Trump ammunition, and it slaps people in NYC in the face