Your position seems obviously right, so I’d guess the confusion is coming from the internal reward vs external reward distinction that you discuss in the last section. When thinking of possible pathways for genetics to influence our preferences, internal reward seems like the most natural.
That said, there are certainly also cases where genetics influences our actions directly. Reflexes are unambiguous examples of this, and there are probably others that are harder to prove.
Your position seems obviously right, so I’d guess the confusion is coming from the internal reward vs external reward distinction that you discuss in the last section. When thinking of possible pathways for genetics to influence our preferences, internal reward seems like the most natural.
That said, there are certainly also cases where genetics influences our actions directly. Reflexes are unambiguous examples of this, and there are probably others that are harder to prove.