It’s one thing to consider one’s own position and intentions. If you feel certain that you will lose, then, of course, feel free to resign.
However, it’s another thing to speculate about an opponent’s understanding of the position and their intentions.
I’m just saying that we should not immediately jump to the conclusion that they are aware that they are losing and only playing on to waste our time. In some cases, maybe they’ve just simply miscounted or misjudged life/death status and actually think they are winning.
Haven’t we all at some point been a confused beginner that has played on longer than we should?