I don’t put this in the same category as a stalemate for lack of a legal move. That’s just me.
It’s more like being annoyed by a pestering fly.
Being "way down in material" means nothing if the opponent can't checkmate you.
Even if you played terribly, the opponent did not play any better if he allowed you to force a draw.
That rule makes a win more valuable because you then also played in a way that your opponent couldn't clown around with your king. Point is it doesn't matter how close you think you are to a checkmate if your opponent still has counterplay, even if that counterplay is forcing a draw by repetition or forcing a stalemate.
If you almost made it to the restroom but still **** your pants you also wouldn't call it a win, right?
https://www.chess.com/forum/view/general/is-it-bad-etiquette-to-force-a-win-by-checkmate