We don't rename pages just because we don't like the names. See Trope Renaming Guidelines
As is, they're reference to the real life scales named after these people. The name in front is also irrelevant aside from the pun so I see no good reason to change it anyway.
Working on: Author Appeal | Sandbox | Troper WallHas nothing to do with "disliking" the names, but with making them more descriptive and appropriate as well as colorful.
Huh, very first guideline on changing says this:
"The name is Unclear — it fails to indicate what the trope is about, and thus undermines our goal of making the trope as accessible to as great a portion of our readership as possible. This includes titles that have nothing to do with the trope, using technical terms that mean something else in everyday speech and names that rely on familiarity with a particular work to make sense/names that suggest something unrelated to most people."
2nd one does say that they wiki has moved away from "character-based" tropes tho.
Again, you have to prove that the name is unclear. As in, that it's causing it to be misused.
Working on: Author Appeal | Sandbox | Troper WallYou seem to have missed the reference behind the title. The reason why the Mohs Scale of Rock and Metal Hardness is called like that isn't directly because of Friedrich Mohs himself but because of his scale, the Mohs scale
, which is used to measure the hardness of actual rocks. The name was chosen as a pun with the "rock" in rock'n'roll while the other Mohs scales were named after that one (at least I think) and since that name is a recognizable term to measure the hardness of real life objects it makes to use it as the name of pages describing abstract hardness.

Such as:
Dylan Scale of Lyrical Hardness Hendrix Scale of Rock and Metal Hardness Asimov Scale of Science Fiction Hardness Stallone Scale of Violence Hardness
Would make much more sense than keeping the name of some relatively obscure German mineralogist who died almost 200 years ago and who has nothing to do with said concepts.
I would have put this into the Repair forum, but of course the 50 active thread limit prevented me.