Silenced me? Don't remember that, but when I know I'm right, I don't follow up. Maybe thats what you mean, lol.
I don't use WebMD, I use it from my knowledge of medicine, as well as conversation with my brother, who is a surgeon [ok, just a resident, but close enough]. Looseness of a shoulder joint will invariably be under more stress the more the violent action is perpetrated. Wherein the extra rest will undoubtedly help, the fact remains that the trauma caused by such an action is not given enough time to heal. Papelbon would be much better suited to being limited, for example, to no more than one inning and never on back to back games. Anything else is pure folly.
Like a700 said, it isn't a muscle issue. Looseness in joint is a completely different thing.
For anyone with any semblance of common sense, do you really believe that going through a violent action like throwing a baseball 100 times every five days for 7 months, for a total of approximately 180 innings, will be less strenuous than the same action every other day for say about 25 pitches a day for a total of 70 innings over the same course of time? It's not like relievers are brain dead idiots, going out and throwing as hard as they can on every pitch. If they had gotten enough rest, then pitchers should never get tired in September. In fact, they should be able to pitch year round. Especially starting pitchers. They should pitch until they are old enough to qualify for social security.
The analogy is weak, and you know it.
The fact that you are using what someone else stated that is blatantly false and you believe it with out even remotely questioning it, well...actually, come to think of it, I'm not surprised.