And they didn’t just say “No, we’re not going to do it”. They investigated pretty deeply and did try to fix it, but couldn’t figure out how without rewriting the code, as you noted.
Actually, it’s a 100% different reason they can’t fix this. It has nothing to do with contracts or addons or whatever. As @skypilotYTS said, it’s deep in the rendering code, and they determined they can’t fix it at this time.