Because, at least in Pincus' case, he can't be removed. It would be pretty hard to argue that he wouldn't have been canned under different circumstances.
"Pump and dump" may be a bit much. But I'm glad that it's coming to light that business shadiness doesn't start and stop with the financial industry; it occurs everywhere there are substantial amounts of money changing hands. The Valley has some pretty serious scum-baggery going on. I hope we hold the people who promoted this stuff accountable in the court of public opinion.