I don’t think General Kelly served his CIC very well either. He kept tripping over his ego.
That said, he’s certainly not “a piece of excrement”. And, I for one think the father of a son killed in combat is as close to a “sacred cow” as we have anymore.
I follow more your line of thinking; General Kelley is much more deserving of respect than anyone on the internet that’s prone to bashing him for not followed the conservative orthodoxy. That being said, he served at the pleasure of the President, and if he could not follow the directives of said President, he deserves some measure of derision for it.