Studies have shown community is a key component in reducing addiction. A society that accommodated different sleep patterns would probably lead to less tiredness (I am a night owl but my job is 8-5, for example.)

Society doesn’t change your neurochemistry, that’s true. But it can change what your neurochemistry has to contend with. Consider a basic inorganic chemistry scenario: some materials dissolve in water much more readily when the water is hot. Does that mean they are insoluble, or poorly soluble, in cold water? Not at all. The environment impacts that behavior.