That is replacing actual reality with math all over again. In the actual reality this ratio is concrete, limited value. I would say that our numbers and approaches are limited that they are unable to precisely define it. It just we are so used to it that no one even thinks about challenging it. And even if they do - good luck finding funding.

Now we do have tools that overcome those limitations somewhat - like limits and stuff but doesn’t remove the need for better tools.

So I somewhat disagree with both of you - we need new, better numbers that are further from math abstraction and closer to actual reality.

Otherwise it is like this story with Poynting vector from Veritasium video - only confuses instead of explaining.