Look, Cultural Adaptation just tells you the rules about verbal behavior.  It doesn't tell you why those rules exist.

(Possibly because, not to throw too much shade here, the spell was invented by somebody who grew up in Golarion, where cultures don't actually have carefully reasoned justifications that you can look up, so the spell just presumes that all the rules are there for random incompressible historically contingent reasons.  Really that's kind of implied by needing a Cultural Adaptation spell in the first place, rather than just being able to derive all the cultural rules from first principles, or rather, from knowledge of dath ilan's empirical truths plus its utility function.)

Look, Cultural Adaptation just tells you the rules about how to behave.  It doesn't tell you why those rules exist.

(Possibly because, not to throw too much shade here, the spell was invented by somebody who grew up in Golarion, where cultures don't actually have carefully reasoned justifications that you can look up, so the spell just presumes that all the rules are there for random incompressible historically contingent reasons.  Really that's kind of implied by needing a Cultural Adaptation spell in the first place, rather than just being able to derive all the cultural rules from first principles, or rather, from knowledge of dath ilan's empirical truths plus its utility function.)

Look, Cultural Adaptation just tells you the social rules to follow if you want to blend in.  It doesn't tell you why those rules exist.

(Possibly because, not to throw too much shade here, the spell was invented by somebody who grew up in Golarion, where cultures don't actually have carefully reasoned justifications that you can look up, so the spell just presumes that all the rules are there for random incompressible historically contingent reasons.  Really that's kind of implied by needing a Cultural Adaptation spell in the first place, rather than just being able to derive all the cultural rules from first principles, or rather, from knowledge of dath ilan's empirical truths plus its utility function.)

Look, Cultural Adaptation just tells you how to behave and the rules to follow if you want to blend in.  It doesn't tell you why those rules exist.

(Possibly because, not to throw too much shade here, the spell was invented by somebody who grew up in Golarion, where cultures don't actually have carefully reasoned justifications that you can look up, so the spell just presumes that all the rules are there for random incompressible historically contingent reasons.  Really that's kind of implied by needing a Cultural Adaptation spell in the first place, rather than just being able to derive all the cultural rules from first principles, or rather, from knowledge of dath ilan's empirical truths plus its utility function.)