This information is rather confusing. I know Rabbi M is gone but maybe someone else can answer. Is she saying that being a Jew is like being Irish? In the sense that you are born to Irish parents that have a culture and traditions - but don't necessarily have anything to do with religion? I guess when you think of a Jewish person, you automatically associate it with the Jewish religion. There are of course varying degrees of that religion. Some rather strict.
And if you compare it to the Catholics, Mormons and even some JW's, some drift along with most of the religious ideas but not all of them. My grandma was a Jack Mormon.
I guess you could view Rabbi M's posting as sort of "Hey, another JW escaped from JW land, it can be done!" But it could also be for a variety of other reasons. Just talking to myself now.