It features 22 people, which already seems quite a lot for a 90 minute documentary. And I can think of several other prominent Python people who are not listed. And lets be real here: "I made a Python library people like" really doesn't compete against "I was a core Python dev for 20 years". requests being "one of the most foundational Python libraries in history" seems quite exaggerated.
This kind "I need to be front and centre of attention and when I'm not I am being oppressed" type stuff is a big part of the reason why so many people found it hard to work with Kenneth. His constant self-aggrandizing and need for endless validation gets very tiring very fast.
I appreciate that Kenneth's mental health struggles are very real and I do not mean to devalue that in any way, but his constant use of his mental health to dismiss and and all criticism of his behaviour is another thing that gets very tiring very fast.
Of course I have no insight in many aspects of Kenneth's life and can't comment on any of it. I am perfectly willing to believe that sometimes in some places he has been discriminated due to his mental health diagnosis.
I can however comment on the state of things in Python because much of it is public, and the problems there have been mostly or entirely unrelated to his mental health diagnosis.