The feedback loop described in the OP creates groupthink, politically correct culture, an abundance of blind spots, & a narrow path of evolution specifically tailored to the group's worldview. Group "whips" are given positions of power to mete out punishment against those who cross lines defined by group & interpreted by the "whip".
If one sees all models as being false, the teleological fate of the OP's group feedback loop unchecked is group delusion, irrelevance, harming a perennial ever changing subgroup of outlier individuals, & eventual collapse. The perennial ever changing subgroup of outliers individuals is necessary to feed the base emotional reward circuitry of the "in group", a necessary sacrifice to cohere the "in group", feeding the group's evolutionary descent...
Perceived morality is important for the "whip". There's always a statement of alibi & justification while the "whip" is punishing others. "For the greater good" is often an alibi to justify the emotional reward circuitry "hit" of those afflicted with these addictions