Was it incest when the people who grew up in the kibbutz together ended up marrying each other? (and not blood-related, to be sure). Because they had affinity and the kibbutz community was a lot more family-like than many of today's modern families.
Probably depends on the size but kibbutzim appear to function like villages used to. (But they have changed their position on childrearing a lot.)
Today's modern families and villages are pretty messed up, and promoting the idea that "close" people (as we could call them) should become sexually involved creates additional problems.
For me it would be just genes.
Was it incest when the people who grew up in the kibbutz together ended up marrying each other? (and not blood-related, to be sure). Because they had affinity and the kibbutz community was a lot more family-like than many of today's modern families.