The announcement is interesting but does not seem to be sufficient for preventing other institutions avoiding such donations themselves. The EFF decision was highly specific to their own situation and their need to separate their technology use from their actual role.
The EFF has stopped accepting Bitcoins primarily out of concern with the possible legal issues. I presume that the EFF has a better understanding of any possible legal risks than organizations like the SIAI. It seems that the SIAI should probably at least for now put a hold on accepting bitcoin donations until these issues are resolved.