Hm. Perhaps you're on to something: our museums tend to present things in their true scale. However, this is not always desirable. For instance, consider the use of macro photography for inspection of the brilliant detailing of small things.

Physically scaling up small things may indeed be problematic, but with the assistance of VR or AR, one might be able to digitally scale it up. [Here I'm remembering my love of The Magic Schoolbus series.]

Another is that it dodges the reality check of math. I recall reading a bit of advice to authors of popular science articles: each equation in the text cuts your audience in half.