So I think the EFF's totally right in doing this. However they probably should've thought of this before they decided to accept Bitcoin donations in the first place.
From their
announcement:
We helped inform our members about this unique project through our blog and we experimented with accepting Bitcoin donations for several months in an account that was started by others.
It seems it wasn't their own idea in the first place.
Well, since they have legal concerns, it's very convenient to state something like this, so that they can say it's unrelated to the organization if shit hits the fan.
I think they just realized that the enemies they can make with Bitcoin are much more serious than the ones they make with Bittorrent, TOR, etc. Besides, people are like abused children when it comes to core issues like money, there is a lot of people who are willing to act against Bitcoin out of their
good will. It's hard to assume that the average EFF supporter likes the idea of Bitcoin.