> at what point does it become not worthwhile There is always someone who will want to do it if only to show they can. You only need to care about "worthwhile

> at what point does it become not worthwhile There is always someone who will want to do it if only to show they can. You only need to care about "worthwhile" if you're balancing it against other concerns. Obviously people are generally going to be motivated to smash the larger ones first. But Linux doesn't run like a centralized project where developers are directed on what to prioritize.