I think a better analogy is "Twiddling fonts is to programming what choosing a helmet is to car racing". An ill-fitting helmet will probably do the job just as

I think a better analogy is "Twiddling fonts is to programming what choosing a helmet is to car racing". An ill-fitting helmet will probably do the job just as well as a good fitting helmet, but why be uncomfortable? That said, I agree that there's a limit to how much effort you should put into font selection -- find one that you like and that works for your purposes and leave it at that.