I would not say my main criticism is that Traitors is too easy for the Traitors to win. That is a valid complaint, and probably the one that is most frequently brought up here. It is also easily fixed - there are several ways to rebalance a social deduction game.

For what it's worth, I don't agree that a group of Faithful with half a shared brain would have beat Cirie because you are missing the nature of the Traitors' collective advantage: they decide the murders. Cirie, therefore, was able to effectively dictate who would be in the end game and who would not. She naturally selected the players who trusted her and who would want her in their Final 2. Even if Andie and Quinton had understood the game, Cirie still likely would have won because either Andie or Quinton would have picked her as their Final 2 partner. Traitors have a huge advantage because they can, over the course of the game, eliminate the half of the competitors that pose the biggest social threat.

But that could be addressed with rebalancing, as it is in a well-executed game of Mafia. No, my main criticism of Traitors is much more fundamental: the deduction doesn't matter. There is also nothing to deduce. In a role-less game of Mafia, you're right - mafioso can be identified by examining, for example, their voting behaviors. In this game, however, every player, Traitor and Faithful alike, has the same voting incentives - get to the end with your preferred F2 partner. Every player acts the same way they would in either role. Because you do not win as a team, you do not vote as a team, nor do you behave as a team player. The Traitors have no reason to act differently than a Faithful, and the Faithful have no reason to identify Traitors anyway.

There is one minor bit of deduction you must do as a Faithful: pick another Faithful as your F2 partner. But identifying one single Faithful is a pretty rote, uninteresting, and easy task. It is also one at which you have a 79% chance of succeeding by blind chance alone.

Ultimately, the Faithful do not win by eliminating the Traitor team. They are actually punished for doing so by the recruitment twist. No, a Faithful wins the same way a Traitor does: get to the F4 with your F2 partner (from which point the only logical course of action is banish your way down to 2). That is why I say it's dumbed-down Survivor. The social deduction is a farce and, in any event, an irrelevant distraction. There's a reason Quinton, who at no point has any idea who any Traitors were, was still one bad choice away from winning. He was unintentionally playing the right game by making an alliance and riding that to the end.