That's 50% nonsense and you know it. Members of a semi-static premade will of course have a willingness to work together, otherwise the premade would never have formed! And anyone with that level of organization and commitment isn't going to go to all that trouble then stink up the place. The power of a premade comes from the specific combination of jobs (as described explicitly in your own guide), and the fact that LB coordination in FL is devastating.
You don't instill these principles in the average player by curb-stomping them, you instill cynicism and defeatism in all but the handful that choose to form their own premade, thereby deepening the current crisis.