It's a bit hagiographic, but it's overall a very good book.
hagiography (webster):
1 : biography of saints or venerated persons
2 : idealizing or idolizing biography
Yep, he's right
If him blasting music and destroying things with various weapons while devs were trying to code and running ads telling customers he was "about to make you his bitch" was a hagiographic gloss, then reality must have been truly dark.
At least that was how it was presented in (iirc) Masters of Doom, who knows what the actual truth is.