I love clear counterexamples like this. Reminds me of the group that tried to “collectivize” parenting because they saw the family unit as inherently patriarchal. Turns out kids need to make a strong bond with a small number of caregivers if we don’t want them to develop attachment disorders. That’s not to say the nuclear family doesn’t have other toxic baggage from patriarchy and capitalism, but the fundamental concept is there for a reason