I don't think it's potshots; I think what the poster was merely saying is that when you are removed from a situation, you are less likely to have empathy.again, you are intentionally being insulting for no reason other than it you feel like you’re scoring points on an attending.
You are correct that it is obvious that a power dynamic exists, and that it is possible for exploitation to occur in such a setting. It is not obvious to me, or a number of other users in this thread that exploitation was occurring in this specific case. But the grandstanding and potshots certainly arent helping to convince anyone.
For me it's simple. You don't ask anyone to volunteer when there is a huge power dynamic at play. It's just doesn't seem fair.