Reading the comment makes it pretty clear why he left. The number of first person references and self-promotional statements there suggest underlying personnel conflict.

Whether the company is going up or down at this point will probably depend on whether it's a development play or a marketing play. Whenever core engineers bail you usually end up with worse people doing a more incompetent job. Sometimes OK if the value is all in the marketing, and technology is getting in the way.

I think they're all shark meat though.