I've spoken to acti employees and I know they might just say it because why would they ever not say it but, they said he's a nice guy, he plays video games and comes by their studio every now and then.
I've not worked in a AAA company but I have interned in a rather corporate company before and got a sense of what it's like to work with the big business CEO guy at the top. Witness to people being "let go" and the general atmosphere of such a place. Generally a good work environment if a bit too office-political (can't wear short pants etc.) but as soon as you see people getting fired you know that it's do or die and comparing it to Activision and Bobby Kotick, I kinda know what I think about him. He does the industry-average job for people in his kind of career only he's very good at it, it runs the company but also at the expense of employee job-security and... well, it doesn't instill you with passion for creativity and passion for gaming in the long run, if you you're cut out of the studio the second their bottomline isn't as good as last year or their projects are so arbitrarily high that they gave themselves an excuse to fire you.
AAA companies are just trash in that sense. I'd really like to know any studio that doesn't ultimately run like EA or Activision in that regard though.