McCain is an embarrassment, even to the Republican party as it stands now. If what Trump said about McCain would be the impetus to get McCain out of the Senate and back in Arizona so he can spend his wife's money, that would be a public service credit for Donald Trump.
But probably not. McCain will probably die in office, inflicting his good-intentioned bad results on all of us. I hope at his funeral a flight a "Wacky Birds" salute After-Burner Johnnie.