Yes, you probably did not ready my entire first post in this thread 
I explicitly said I am not a fan of these shenanigans too. I also prefer roughness to just stay roughness, a single parameter with the entire microfacet approximation model correctly handled under the hood. You were just asking if there’s an example of a renderer implementing it, so I posted one. But that doesn’t mean I support it, let alone want it in Blender 