The question is what to do about it. We're not just talking about confusion arising from different notation between mathematical specialties (resolving that would be as easy as defining your notation in an appendix), but different, equally valid ways of mathematical thinking.
In some ways, it may be better to think of different mathematical specialties as different programming languages. Proficiency in one will help you, but won't guarantee that you can interpret another. Except that in mathematics, the differences are more extreme. If you have two Turing-complete programming languages, then you have two different tools that can solve the same class of problems. But different fields in mathematics deal with entirely different mathematical objects which require a conceptual instead of notational leap on the part of the reader. It's not simply a matter of figuring out how to write for loops or manipulate strings in the new language. You actually have entirely different ideas in each, and trying to impose some common notational standard among them is fraught with problems.