Why does a player's resignation state affect the distribution of points for being stalemated?

I played a Labyrinth 82 match in which 2 players resigned. Those 2 players then got stalemated, which resulted in their points being distributed equally to the 2 remaining players. In the end, I was winning both in pieces and points, but I stalemated my opponent (I could have avoided it and won, but that's not the point), which awarded them 20 points (I wasn't aware that that was the case), making them win the match.
My question is, what is the reasoning of awarding the 20 points to a stalemated player just because they haven't resigned?
I feel like it would make more sense that the points be distributed to the remaining players just like they do in case of: the stalemated player having resigned, insufficient material, threefold repetition, or the 50-move rule.
Would like to know opinions about that.
This is my first post on this website. I wasn't sure whether to post it here or in the Chess Variants forum.

because they aren’t dead

And because stalemate is regarded in 4 Player Chess variants as the error of the stalemating party. In certain variants "Stalemate Loses" is a gamerule, however, whether or not it's applied is at the discretion of the variant creator when they were making it.

I guess to make the 4pc game more fun, look how happy your opponent was in the chat xd also gives an extra spice to the game, so that the player who has the advantage does not trust, otherwise the game would be very easy, it is better to leave it that way.