The problem with the approach taken by Google & Co. is that it criminalizes beliefs, regardless of whether or not adherents have taken illegal actions based on their beliefs.
If people 1) believe something, and 2) perform illegal actions based on their beliefs, a free society can punish #2. However, a free society can neither outlaw nor punish #1 without sinking into some form of despotism.
Liberty need not approve of all that she protects, and the best way to combat bad ideas is with better ideas, not censorship. Kudos to the EFF for raising an important point.