Usually the central taboo in kinship systems is incest, but pedophilia can be non-consanguineous. What I want to speculate about is twofold: 1) what kinship system is implicit in a society which seems to have pedophilia as more taboo than real incest; and 2) how could that change come about?
1. I think we've moved towards something like a Hawaiian kinship: every member of the older generation is treated as mother/father, and every member of the younger generation is treated as daughter/son. That way all intergenerational sex can be viewed as incestuous and become more important than consanguineous collateral sex (i.e. sex between blood-related siblings). (As an aside, maybe that suggests something about the rise in popularity of roleplaying as siblings in pornography?)
2. Communal childcare (alloparenting) emerges from feminist critiques of the nuclear family. So parenting becomes a generational responsibility, rather than something between blood-relations.
(an example: https://www.theguardian.com/lifeandstyl ... s-children)
In the past, I speculated matrilineal societies would be more tolerant of intergenerational sex because of less concern for the virginity of women and girls. If we're imagining a hypothetical kinship system which pedophilia most naturally fits, obviously it needs to have more than that. I now think it would also have Dravidian kinship since certain Amazonian tribes (e.g. the Kanamari and the Barasana) with Dravidian kinship don't expect affines (in-laws) to be responsible for non-blood relations, meaning it is the culture with the lowest expectation of alloparenting.
What do you guys think?