Yeah, maybe you should look at it yourself:

This website contains the complete contents of the 12-volume Jewish Encyclopedia, which was originally published between 1901-1906. The Jewish Encyclopedia, which recently became part of the public domain, contains over 15,000 articles and illustrations.

This online version contains the unedited contents of the original encyclopedia. Since the original work was completed almost 100 years ago, it does not cover a significant portion of modern Jewish History (e.g., the creation of Israel, the Holocaust, etc.). However, it does contain an incredible amount of information that is remarkably relevant today.

(Emphasis mine)

Not really relevant data if it's from 1906.

And still not "World Jewish Encyclopedia."

protip: There's no such thing as the "World Jewish Encyclopedia." Which is the point I was trying to make.