If the Vig is killing confirmed third parties, they are playing to lose, by advancing the Scum win conditions and not advancing the Town win condition. Yeah, it’s possible the Vig could sabotage us, but I wouldn’t base my tactics around it. (Also note that one player alone has the switch for the Vig now. It’s quite possible we’ll see no more Vig kills.)
But when players say “there’s 5 of us” and yet only 2 have been produced, that greatly weakens your claims. Are you lying about your numbers? We can’t tell. Your actual numbers is the part of your claim that can be verified. The longer it remains unverified, the more it looks like you’re lying to us.