It is a setback and he is probably feeling really bad. He is very careful in picking his words and being a Stanford grad, he will not approach the microphone until he has all the data about his shoulder's progress to confidently project his future. There is no doubt in my mind that if he is not happy with the surgery he will have it again. Right now, he needs rest (conjecture on my part:because inflammation may have generated soreness and pain) before new assessments can be made. I really feel for this young man.
When Peyton came on board, they made sure he had a solid OL. They had an OC and OL coach like Moore and Mudd, and Arians for a QB coach. None of that was made available for Luck. I think the Manning family made sure that Peyton was being solidly protected. Going forward, I think Luck will demand the same.