It's not just moderators. The article was incorrect due to anti-zoos pushing their agenda by representing the legal situation incorrectly, e.g. for Germany. And Wikipedia has no effective means to stop that, at least not when fringe topics are concerned, e.g. the legal situation in a country with a different national language than the Wikipedia edition.
I guess Wikipedia doesn't even care that much about correctness. It has a paradigm that is literally referred to as NOTTRUTH ... as in: Wikipedia is not about truth. While I could understand a valid idea behind it theoretically (claiming truth is not enough, it must be verifiable), it happens to be interpreted in practice as Wikipedia being fine with spreading known falsities, if only they have sources for it. In so far Wikipedia is more of a content aggregator than an encyclopedia gathering factual knowledge.