> Math notations, conventions and concepts usually operate under the principles of minimum description lenght.

I think you're confusing the fact that math is typically written by hand on paper or a board. That optimization is not due to math, it is due to the communication medium.

If we look at older code we'll actually see a similar thing. People are limited in character lengths so the exact same thing happened. That's why there's still conventions like 80 char text width, though now those things serve as a style guide rather than a hard rule. It also helps that we can auto complete variables.

Your criticism is misplaced.