Yes, I know about bug trackers, I have used them. However, you mentioned it was like getting a car fixed. So where do I go where I can pay someone to fix GNOME-shell induced graphics problems? I don't have any confidence that just leaving a bug report in some tracker somewhere, in the hope some hacker I have no contractual relationship with will fix it, will lead to this issue being fixed. No more than I expect my car to be fixed if I just park it near a car mechanic.
As for which computers don't have good 3D support under Linux, install Fedora on any NVidia system. I don't have a citation to hand, however it's surely not controversial that NVidia graphics constitute a sizeable set of modern computers?