Technically, he's probably right. However... it's not worth the fight. It's just not. This guy, and he may be well intentioned, isn't really doing a whole lot. Most people don't give a shit about whats on the money, besdies the numbers.
This will just get the Bill O'Reilly's of the world all bent out of shape. Especially with Bill fighting the War On Christmas.
(He recently stated that the phrase Happy Holidays is offensive to Christians.... Wow. As for that whole story, I always assumed Happy Holidays included: Thanksgiving, Christmas Eve, Christmas, Chanunka and New Years. See, multiple holidays. It doesn't mean Christmas sucks, or fuck you Christians. It encompasses all holidays of this time of the year. But aparently including everyone is offensive to Bill.)
There are some fights that are worth it, and there are some that aren't. This athiest (and the Pledge of Allegience one) are going to be the face of the entire American left, whether they should or should not. Do they have a point? I think they do. Is the bad press worth it? I don't think so. This is how the whole 'Democrats hate God' shit comes about. Stories like this.