I dont share the concern. I remember that the Haskell project took a lot MS money in research grants, and this was discussed as "potentially damaging to the project".

Crypto currency is no different for me from other financial products: they have the potential to be very dangerous for the users of such services. Now often this is because of a lack of information (ponzi schemes, sub-prime mortgage packages), but with crypto all the rules of the game are opensource :)