I think one difference is that he wasn't exactly injured. Worn, stressed and fatigued, yes, but not really broken. I tend to thing in another generation, deGrom's "stress reaction" would have been otherwise diagnosed, and he would have been back in the rotation in a few weeks. And though he'd pitch with excess soreness and be a lesser specimen, that would be considered part of the game, and it would be up to him to learn to work with less, or fade from the top top of the pack. And maybe a season and half later he'd return to form, or maybe he'd have another good season but be relying on different stuff.