How about personal experience working with TK and a bunch of friends working at Google on Cloud? You can look up the severe production outages GCP has suffered over the past years, if you care.
All big organizations are dysfunctional in their own way.
If you know better, I'm all ears! Not trying to discount the hard work of all those fantastic Google engineers. It's just, prod issues are prod issues, regardless of good intentions.
Toxic TK, otoh, he's selfish, self-aggrandizing, out of touch, and not very nice or cool at all. Everything he touches bears his mark.