The two other specific failures that also are hard to defend:
1) Rape report from the case in India - TK should have fired the exec for the violation of privacy and disrespect to the victim. The fact that he saw the report and didn't do much about it is a failure.
2) Otto mess - not going to assume he knew or did not know but it's a failure of judgement to drive that acquisition without properly making sure he didn't expose the company to such a high degree of legal risk.
At the end of the day, his reputation for risk and brashness cuts both ways. I lean towards believing he's someone who will do what it takes to win and I respect that. If you get caught though, be prepared to suffer the consequences if you cut a few corners getting there.
* BTW this shit isn't unique to Uber - anytime $BBBs are on the line, people will do things they might normally not do.