Should've went ahead and had the surgery last February when it was first discovered. PRP and rehab was always a long-shot.
Nope. Should the Yankees have just cut Cole, too? Avoid this surgery as long as you can. PRP success rate is relatively low, but its high enough that its worth the effort given the low cost of just a few months time and the extreme cost of the surgery. Even with all the modern improvements, Tommy John is not a 100% recovery to previous levels (look at John Means for a recent example), so if you just slice guys open you're risking their entire careers rather than just a few months on the shelf trying to see if the UCL damage is manageable with the PRP.