It’s bad because we have to lynch them all. Maybe I’m missing a case, but in any situation where it matters what flavor of Scum we lynch, Town will no longer be a majority of players. So Scum will control the lynch at that point, even if they haven’t won yet. That is, we will have lost, even if the game is not ended. I don’t fancy picking winners between the two factions.
While there’s nothing inherently wrong with discussing end game scenarios, we’d do better by lynching any Scum at all rather than discerning if they’re the better flavor.