Everybody loves to take the piss on Neumann (and the money he grabbed), but frankly, this is what startup culture is about: found a company, make it look like it's big and worth a lot of money (if it is real, that's great. But it doesn't matter) - and finally cash out.

This is what all startups go for: either with IPO, or trying to get acquired by someone who can afford it. Once the money is in the pocket, never look back.

Not sure why is he singled out - or more like, why others are not.