If you use non-uniform scale outside of sub-object mode, it's going to distort the local transform space of the whole model. If you need to scale stuff, best to do it on the sub-object level: Vertex, Edge, Polygon, Element, etc.
It's like asking why there's no good road PBR textures, water shaders have so many different requirements and needs and layers that no one size fits all solution is going to exist. Same with roads, terrain, grass, etc.
You might have seen something like this today. Oopsie! We had a little mistake from our domain registrar this morning, they didn't auto-renew LIKE WE ASKED THEM TO. Oh well, all solved now, with a little manual jibbery-jabbery. Sorry if this prevented you from using Polycount. We like being used. Use me, baby! Etc. etc.