Imagine if a society was dominated by literal retards and they were making decisions that affect you, as a group rejected your views as wrong because they were not the consensus, and punished you during a time where you had no autonomy to do anything about it. Retards do not like being contradicted, they find it to be an assault on them. Since their views are based on heuristics, they will not even understand logical arguments. That might not be a problem after you become a adult, but as a high IQ child among retards they'll instil a kind of fear of others that turns you into a hermit. If eugenics was implemented, or high IQ people simply were given their own state or city, that wouldn't be an issue and the currenly high IQ people wouldn't develop into hermits and losers.