No more so than anyone else. Xtians are extremely judgemental of non-Xtians. As a Jew, I'm sure your ancestors have, unfortunately, been on the receiving end of that.Atheists are judgemental by their very nature. Who else would bother to advocate a stance?
Besides, everyone advocates a stance. Belief, non-belief - those are all stances.
More accurately, atheists tend to be more skeptical of claims that aren't backed by evidence. I wouldn't call that judgemental, but I would call it using good judgement.