It started with "religious laws can't be used to enforce state laws" and then he went on to attack religious beliefs. That is the problem. All he had to say was that the law (that was voted on and approved by the people of California) was unsconstitutional for whatever reason (most reasonable would be the "free speech" thing or such) but I think he got up on his soap box to say that religious beliefs shouldn't even be mentioned. This, ironically, infringes on free speech.
The problem is that these things are so huge (
like 138 pages of text) so unless you feel like reading through that much crap, you have to rely on what people say about it. Since a lot of the time people just report on the immediate end result, the people pointing out that his verdict could have repercussions on the freedom of religion and the fact that he called California voters irrational (I shit you not) gets lost in the news feed.
Of course,
Wikipedia is always an option.
Of course, this wouldn't be the first time a California judge attacked religious belief: there was that
whole fiasco with the pledge of allegiance and the words "under God".