Mafia: general discussions.

this thing, in a way, says "I'm not a doctor," which is already significant information. And if this thing is used in a specific context, it can be a hint that there is some kind of protection.

Complete nonsense. Many people (including myself) can easily give instructions to a doctor if he is a doctor himself. We just need to find a way to disguise it.
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Red, you're the only one complaining here; notice that everyone else is fine with it.

No, to be honest, I don't like hints either, although my dislike mainly concerns unsubstantiated hints, when it's easy to do without them.