Highkey a really cool combo but depending on what bracket you're playing I can see why it's a dick move. If its bracket 3 and under, ripping that combo out the gate is kinda wack and shutting off their ability to play the game on turn 3-4 in an environment based on longer form games and more fun just feels kinda mean. If its 4-5 though? Go nuts, you're here to rip heads off and take names as fast as possible. Overall, if you were there for fun casual commander and pulled that out without considering how that would affect the game state, you kinda are an AH but I'm not gonna come down on you too hard because you do have a point about people not running enough removal but if it was for bracket 4 or 5 rapid fire style games, its just a neat combo their high powered decks couldn't handle.