I completely agree with your critique here but I will say that I have had difficulty understanding pure math texts because of 'colorful' language -- e.g. "chattier" treatments of mathematical analysis. But I will also say that I'm glad such treatments of the material exist, partly because I know that what appeals to me doesn't appeal to others and these might be a valued resource for them, and because often pushing through and understanding texts that were difficult at first helps us to see the material from a different perspective. I think this optimization perspective squashes this possibility a bit when taken too far, as it usually is

Think of how much money we could make if we weren't wasting so much time being creative.

There’s no universal answer. Like most things it’s highly subjective and some people will want the standardization line to be in a particular place than someone else. I for instance, love the standardization of programming and science research for the most part into one language but at the same time, I also feel terrible about languages that are hundreds or thousands of years old disappearing forever.