I full on believe Kirby is full of it. Well not that all that he said was trash but I really have a hard time trusting what Kirby said. I don't trust anyone who says they've never told a lie.
There are also many others who worked with Lee that are downright complimentary of the man. John Romita Sr for example.
Not too say Lee hasn't done shady stuff or w/e.
Also, damn if Lee is cussing and going on ragers, thats pretty impressive virility. Dude is 90+