I disagree. At least you can "understand" what someone has written in another language. In fact, at the end basically everyone is speaking the same language. My experience in math is that you become so specialized you literally have no idea what the problem domain the other person is working on even is. The only discipline I could compare this to may be theoretical computer science, but that's basically a closely related math variant.

Edit: Come to think of it, literature may work. Nowadays you don't become an expert in lit, you become an expert in Shakespeare or Proust or Dostoevsky. Sometimes you may even be an expert in a single work. I think the problem is mitigated a little bit by the very low ratio of jargon to information. Math, on the other hand, has an entire new language to learn in each new subfield.