I think you're overselling JWT's involvement. That link just says that the brokered the deal, not that it was their idea.

All the stories I've heard[1] say the idea came from Google as Hiroshi Lockheimer (now head of Android & Chrome OS) was a big fan of KitKats.

1: https://www.theverge.com/2013/9/3/4691040/android-kitkat-the...