Bitcoin mining itself faces the same "risk", with a much greater impact in case it happens.
Not only is Gavin unlikely to humor this, it's a very disingenuous comparison. Bitcoin is at risk of a single malicious party which must afford to scale their attack against everybody else in the network, at direct opposition to the market incentive to act as an honest party. Not only is there
not a market incentive to act as an honest voter in the foundation, the entry rates (2.5btc) are static and do not change based on the demand of new participants.
You simply cannot have a "1 person 1 vote" system that allows anonymous donation. Since they actually want their foundation to have credibility, they've made the right decision.