It is what it is: an effort by a group of editors to put together all things Catholic into one encyclopedia. They ran it by a lot of folks, went through a lot of revisions. It's a valuable compilation. I don't believe one would find anything in it that was contrary to Catholic doctrine; but, to say it is a work of the Church and everything in it is the official view of the Church would be wrong.
Ohh so they are not part of the church..or maybe because they wish to have some credibility they left out tradition that the magisterium has never “infallibly “ proclaimed and just stick to the REAL KNOWN FACTS.. Shocking i know