I sympathise with your son, but the military injects so many different things into their soldiers and just the general aspect of what it's like to serve, there's really no way you can make that connection. This is a classic case of mixing correlation with causation. I hope he's able to make a full recovery, but it's more likely that the military is making him get the procedure early because they would rather pay for a surgery than have to pay out life benefits if something happens. They do these kinds of things all the time.
So, the military is not making him get the surgery, his Cardiologist said he now needs to get the surgery, because his heart has deteriorated so much in the 3 months since his last checkup. It is my nephew, and he has been in the military for years, so it is not like he just joined and got a bunch of shots during the last 3 moths.
Also, as per the bolded statement, that is part of my point about the mis-information, and fudged statistics. So in the 3 months since his last checkup (The time during which he had the vaccination, his heart deteriorated more than his cardiologist has ever seen in another patient. OK, lets say we can't technically prove that it is due to the vaccine. They never use this kind of absolute logic when counting Covid Deaths. If someone had the virus and died, it was counted as a covid death. Hell, Hospitals were monetarily incented to categorized deaths as Covid related. So, basically they are using two different standards, one to inflate the Covid death numbers, and one to minimize Vaccine danger. I would say that that is neither science nor medicine. It is politics.