“Almost always”. If the entries were completely randomised this would still be the case, since the murdered are always faithful and the majority of the remaining are faithful. There could well be some production bias but it’s not the cheat code you’re making it to be. Traitors can and will enter last.
It's pretty rare, like any guessing game there are advantages and on the whole traitors entering last as I believe happened less often than the percentage of traitors to faithfuls would allow if it was randomised.
