If you only count deaths, yeah, bad programming has negligible impact maybe. If you extend it to general suffering, it's quite a drag on everyone actually. And incidentally, good programming can make a world of a difference, too.
So wanting to select for good programming, with even just having a good minimal standard, is a reasonable goal.
The problem is that we're not even sure what makes good programmers and how to spot them, as evidenced by the continuous stream of "I think..." and "Well actually" stories & comments here on HN.