What is missing is: WHY? Why is it helpful or interesting to have an isomorphic piano? And what does "isomorphic" even mean here? As a casual piano player and

What is missing is: WHY? Why is it helpful or interesting to have an isomorphic piano? And what does "isomorphic" even mean here? As a casual piano player and techie, I can guess that it means that each lower key and each upper key are equidistant so that you don't have sometimes alternating raised/lowered (C, C#) and lower/lower (E, F) asymmetry. Is that it?