This IS so childish and stupid it seems like something he would do.
There is a good reason why Barbara Bush did not want him to run. She knew her sons limitations.
Then she eventually gave in, as has probably always been the case his whole life. And now he’s ruined the Bush dynasty.
Don’t forget Bush Sr (former CIA head) giving the throat slash signal at one of the GOP debates.
AFAIC W. did that.
The irony is Jeb was a pretty damn good Governor of Florida.