Look at those stats, talk about a munchkin!
I don't know what to tell you. If you don't see a difference between someone thinking, reacting to, and talking about the in narrative facts of the game, and worrying about what is going on in the plot, and someone who is looking and thinking about how he can keep and manage a +2 proficiency bonus, then you just don't see it and that's fine. I am talking about the facts in the encounter, and my buddy was talking about the facts on his sheet. I half wanted to say in character "what is a proficiency bonus?" Keep on managing your stats and playing based on your stats if that makes you happy. I will play in the moment, and if the stats serve my play so be it, and if they don't I will cope. But I certainly would never think about not taking a logical course of action because I might lose a +2 proficiency. I wouldn't even be thinking about such a thing. I don't know why you would think a DM should ban me from making an in game realization. Why would a DM ban good playing, which is what paying attention is. I wouldn't play with a DM who banned me from using my head.
A) he could have grabbed it and passed it to someone else
B) put the sheet down and don't worry about BS like if he will lose a proficiency bonus and just go with the story. It's an obsession with stats over roleplaying. That is where the Es differ.
I don't know what to tell you. If you don't see a difference between someone thinking, reacting to, and talking about the in narrative facts of the game, and worrying about what is going on in the plot, and someone who is looking and thinking about how he can keep and manage a +2 proficiency bonus, then you just don't see it and that's fine.
But even as a 1e Magic User if I saw a Holy Avenger, damn straight I am taking it and figuring out how to get it to my Paladin buddy. I never said anyone should break a rule or campaigned for it.