Ok so I won't jump to conclusions, but based on how I read your post, it sounds like you're fishing for an easy paycheck.
Again, not judging or jumping to anything, but I'll ask you to read your own post again. I'm just saying what it SOUNDS like.
But to answer your question, if you come in healthy with no issues, but then you develop issues while in service you are entitled to Veterans compensation. They know how much money that means, so if you take $400K+ in HPSP, and after a year of service you suddenly have "medical problems," they lose that money, plus the govt. now has to compensate you for your service connected disability. With all that, you better believe they will scrutinize everything. They will be able to tell the difference between a legitimate service connected disability and someone just trying to weasel their way out of their obligation (again, not saying that's you, but believe me, there are people out there that have tried; they have no honor whatsoever). This is why they are so stringent with medical readiness as far as people joining.
As far as I'm concerned, I've been operational for a long time. My body has had a lot asked of it and it has taken a beating with multiple deployments. Now I'm in the process of getting a disability rating. So when I hear of people with BS "problems" getting a free paycheck forever, while simultaneously making it more difficult for people with legitimate service related issues, it really pisses me off.
Again, not jumping to conclusions with you or judging. I'm just interpreting what I read, and if I read wrong I apologize; I mean it.
If you have more questions, I'll be happy to answer.