nobody leaves a dent in the surface on purpose, the problem is that whatever caused the pothole is almost certainly still causing it to sink under the surface. A patch doesn't fix the problem, it just makes it less bad.
The local obscenely named utility company dug in our road a few years ago, necessitating a large patch. They proceeded to drive through their patch as they left. The tire dents & ridges are still there years later. You're right, of course, but I think you may be overestimating the concern patch crews give to their craft.
Less bad is ok.
Yep. Step 0 in the above list is "build a road with insufficient subsurface/foundation preparation and drainage"