So I just (ab)used the anti-stalling feature for the first time by passing 3 times when I was almost 100 points ahead in endgame (and had been 50 points ahead since midddlegame) and didn’t want to keep playing (there was a bent-four-in-corner and Chinese rules so could foresee opponent not agreeing it was dead, no unremovable ko threats), but boy did it feel dirty. It seems ruder than asking the opponent if they’d like to resign (which might not have worked as I think they were Chinese), but it’s the new OGS way (and at least has no language barrier)!