Not really, as long as there is a majority vote.

If a majority agrees he reason is a good enough reason, they could decide to block it.

Personally I'm pretty neutral in this case. But I'm unlikely to actually join in blocking any transactions. Except maybe if proof was found that an address belongs to a scammer and the proof is good enough.

FBI seized coins well... It's a bit of a hard decision but I think the whole war on drugs is indeed a bit silly. If people want to destroy their own lives with drugs it's their own responsibility. And I believe making drugs illegal only causes more problems because illegal drugs are more profitable. If drugs were legal they would be cheap and there would not be much incentive to sell them anymore.

I'm  not sure how blocking the FBI coins would affect the price, but I guess it would have a positive effect on the price as long as there is no reason to believe the majority of the users will go berserk and block a lot of addresses for minor reasons or even pure greed.