Have you ever played a contact sport? Suffered a serious injury, sporting or otherwise, for which surgery is optional but not necessarily required? Spoken to multiple surgeons about the risks involved?
As someone who can answer all those questions in the affirmative, let me tell you that the decision to undergo surgery is nowhere near as cut and dried as you seem to think it is. While it varies from procedure to procedure, surgeons often have to cut through a good deal of healthy tissue and muscle to get to the damaged stuff, and it can often be a crapshoot as to whether they end up doing more good than harm. And that’s if the surgery goes well - obviously no matter how routine the procedure there is always the possibility of things going horribly wrong.
So it is neither uncommon nor suspicious for an athlete to wait and see how well his body can heal on its own before deciding to let someone cut him up. In my case I twice suffered serious injuries that could have been repaired via surgery, and in both cases after consultation with both my specialists and a couple of surgeons in my family I chose to forego the operations and allow my body to heal on its own. I still have some impairment from those injuries but it’s at a level where I felt the possibility of full recovery via surgery wasn’t worth the risks involved.
So rather than the outlandish conspiracy theory you and others are pushing here, it is infinitely more likely that Kuch was, as publicly stated and as so many others have done, waiting to see if he could recover to an acceptable degree without surgery, and after some time realized that surgery would indeed be necessary.