If you are not accepted by the tribe you are forced to confront this and have to justify your esteem through some idiosyncrasy. this can be something good (virtue, intelligence, creativity, etc) or something bad (social stupidity, ugly, contrarianism). You dont find people who don’t fit in and just accept it because that’s miserable

If you are accepted you don’t need to justify yourself and build identity

Societies vary in how easily they allow people to assimilate to the tribe and this is correlated with how conservative/traditional the society is and inversely correlated with how individual/competitive the society is