Not exactly leadership material.
Edit: Apparently an unpopular opinion. Do those here think otherwise given he joined the company less than a year ago (and is thus not part of the original culture), but instead could try to repair the damage done by the uber-bro culture instead of looking for an easier paycheck?
You seem to assume that b/c he left after half a year he didn't try and just wants to get easy money somewhere else. I wouldn't be so quick to that assumption and that's probably what makes your opinion unpopular.
If I'd feel that after half a year I hadn't gotten anywhere, I'd get out too. Regardless of the pay check since one way or another I'm not able to have any meaningful impact on the organisation and its mission. I don't know if that's the case, but that's an equally reasonable assumption given what we know about Uber's culture. However, since we don't know one way or another it might be nice to assume good faith over cop-out or incompetence.
On the other hand the article also says that he doesn't really like conflict so that it may be that the very toxic culture he would need to be fixing is distasteful enough to him that he just doesn't want to deal with it. This doesn't say anything disparaging about him other than perhaps that he is sane and rational and Uber has a really big culture problem.
Maybe 'uber-bro culture' is not actually a thing, and he doesn't see a possible solution for the PR problems?
It's really hard to stop the hatetrain.
I doubt the entire company is tainted, but it does have issues that need to be led by people who will address in something other a Facebook AMA.
The reason it's unpopular is because it's just that. An opinion with no inside view of the situation.
Many times, it's better to just bow out of a bad situation, if you're not given the power to change it, or if the situation was mis-represented to you, or both.
Chalking this up to not being leadership material is intellectually lazy and flip.
"the session did not go over all that smoothly. In total, Jones answered only 12 questions on his public Facebook post"