Something im trying to lean into in my games is to ask the players who are voting no what their win condition or what they think they can make a go of is.
I think what ive said above could make me sound like one of the folks who "want the tightest possible loop to winning and restarting", so to add some nuance there, I think playing a game where the conclusion is foregone lacks agency, and in a game where one team eventually loses of course there is a blurry area where the team agrees that they are in fact never going to win, and then another question on whether they lie to play regardless. Because of the variation there, i like the vote, and i am in favor of coms around why someone wants to resign or stay.
I actually think it is up to players in an open loby system to communicate their intentions and reasons, and while it is true that it means people who spam coms trying to push folks around are possible, i would echo ptaqs sentiment to use that report function! and on a softer level, i really like the mute. if someone is too much, mute them and continue to enjoy your game.