Yes, you're missing that this is all wish fulfillment doomsdayism. People are nursing some recreational outrage because of the revelations regarding Uber's culture. So now they all have a pet theory that Uber will fail. They're working backwards from what they _want_ to happen though, so their "theory" can explain anything:
"Kalanick is a loose cannon who's going to run the company into the ground"
Kalanick steps down
"They have no leadership, they'll close their doors in a week"
etc.
you're acting like this is the start of the idea that perhaps the entire taxi industry is not worth what Uber is claiming, or that having a bunch of autonomous vehicles is probably hard for an iOS app company to manage, or that they ultimately have never proven they can keep drivers happy without subsidizing prices, or that they might not get huge backlash from legal action around driver status, or .....
There's an argument for Uber's eventual success, but there's a lot of stuff against it too. It's not an absurd theory.