Not really surprising.
If you haven’t ever seen the Metallica documentary “Metallica: Some Kind of Monster” give it a look.
At the time it was filmed at least, every one of those jackasses in that band needed a proper ass kicking x 3.....Hetfield included.
I have never seen a bunch of more self absorbed, rich, spoiled babies with a self entitlement mentality in my life.
Every one of ‘em got bitch in ‘em.
Kirk seemed normal. Just enjoying his life and listening to the others whine and fight with each other. I think growing more and more annoyed with their therapist Phil Towle helped them band together to fight him (and his $40K per month fee) off.