They don't as much. As town, I think you'd be more careful about excluding mail-mi for what I perceive to be weak reasons. If all he has to do to appear town is act this way, it maked it very easy for him as scum, and I think you know that.
I also think that, as scum, mail-mi has tried behaving differently, and has been lynched because he wasn't "normal mail-mi". It would make sense for him to go back to his normal meta as scum in this game. You apparently not seeing this is scummy to me.
About your "Well, that was fun" post. No one seems to think it's scummy. I obviously do. Since I'm apparently a quasi-IC today, don't you think scum would have tried to play that up, to confirm to me that this was indeed a scummy post ? No one has done that (yuma and mail-mi don't find it scummy, Eevee hasn't commented on it).
PPE: Lol, I guess you guys are well coordinated ! Just kidding, but I don't think anyon can convince me they're town anyway. I'm not convinced yuma is town. I'm just even less convinced that you are.