Resigning is fine. But when I'm playing out my turn and I'm going to end the game with a win, if my opponent resigns it feels like getting interrupted in the middle of a sentence or something. I wouldn't call it rude, maybe just impolite. And certainly unnecessary. How much time could such a resignation possibly save? You really can't take an extra 5-10 seconds out of your day to let me finish my turn?
(P.S., this comment is not directed at Gherald specifically).