Generally speaking, when someone goes from "co-founder" to firing off vitriolic attacks (I should add "allegedly" since I can't trace this back any farther than a comment on an Air & Space article), one suspects that personal feelings and emotions enter the scene.
Besides, anyone who became CEO of an airship company and was then surprised and shocked to find that such vehicles cruise at <100 knots and that there is an atmospheric phenomenon known as "wind" has to be as thick as two short planks.