That's not all that happened. Torba did more than antagonize people on a Facebook feed. He carefully chose a screenshot that left out the context of his actual harassment of YC batchmates. In the most recent instance, he screenshotted the Facebook status of a Latino batchmate expressing concern about the election --- not to him, but to their personal Facebook feed --- and posted it publicly to Twitter with a "build the wall" taunt.

If the roles had been reversed and, on November 10th, a Clinton supporter (like myself) had done that to someone expressing relief on their personal Facebook feed that Trump had pulled off his upset, I'd have booted that person too.

But I'm not sure even that was enough to get him booted! It seems like the last straw was that, upon being confronted with his behavior and how it made his colleagues feel, he had an entitled temper tantrum. This could have been a Bears/Packers argument and still have been a fireable offense in a real company.

Since this is probably obvious to anyone over the age of 15, let alone to people with Philosophy/Business degrees, I think this is one of those rare cases where the most cynical explanation succeeds: this is a person whose YC Facebook advertising startup failed†, saw little future for themselves in the California startup market, and decided to burn their relationships for PR fuel.

† I should have been way more careful here. I have in fact no idea how well this advertising startup was doing. I apologize for characterizing something I have no real info on (I think the company changed names, and I was going off Twitter feed activity and LinkedIn bios). For all I know, the company was doing great before the founder pivoted to an alt-right social network. Cynicism loses again!