I was not added on FB and I have no idea whether the involuntary adds were the fault of AAWA, people unrelated to AAWA, Facebook, or some combination of these. However, I think it is wrong to dismiss the potential harm done to those who may have been involuntarily "outed," or shift all of the blame to the organization that forces such secrecy in the first place.
First of all, I know of a number of people who have never been involved in the cult, who if they joined a Facebook group with "Anti-Catholic" or "Anti-Pope" or whatever in the name, it would cause significant family tension. I know "Anti-Watchtower" is not the same as "Anti-JW" but we all know that most on the inside would view it as the same. Secondly, people have all sorts of good reasons not to DA or openly oppose the organization, from family relations to inheritances and financial support to trying to wake up or help others out from within. I imagine AAWA would be sensitive to this, considering that the president only identifies with a pseudonym, and presumably would not be happy about it if someone posted his real name as the President of AAWA.