If this is going to enter our lexicon as a short-name for this type of person, I'll point out that since "Julius" is originally latin derived, the pluralization should follow that of most/all latin nouns, and thus be "Julii".
Well, yes. But the blog is an English blog and plural is Juliuses. The rules of grammar apply from the language, not from the word. Sometimes the language inherits the rules from the language of the word. But that's an exception.