Maybe 'Tina' is a bad boss, but to take one employees gripes and accept a face value that she has they behavioural awareness to know her boss is 'insecure' is a stretch too far.
Sometimes, people look at bold and arrogant people and say 'oh, they must be insecure', when maybe they're just plain old jerkoffs.
I see a story of a generally crappy boss, but that's not entirely uncommon in the world. In fact, it's common.
The issue I think would relate to how it's either systematic or not at Uber.