Preference utilitarianism and valuism don’t have much in common.
Preference utilitarianism: maximize the interests/preferences of all beings impartially.
First, preferences and intrinsic values are not the same thing. For instance, you may have a preference to eat Cheetos over eating nachos, but that doesn’t mean you intrinsically value eating Cheetos or that eating Cheetos necessarily gets you more of what you intrinsically value than eating nachos will. Human choice is driven by a lot of factors other than just intrinsic values (though intrinsic values play a role).
Second, preference utilitarianism is not about your own preferences, it’s about the preferences of all beings impartially.
Preference utilitarianism and valuism don’t have much in common.
Preference utilitarianism: maximize the interests/preferences of all beings impartially.
First, preferences and intrinsic values are not the same thing. For instance, you may have a preference to eat Cheetos over eating nachos, but that doesn’t mean you intrinsically value eating Cheetos or that eating Cheetos necessarily gets you more of what you intrinsically value than eating nachos will. Human choice is driven by a lot of factors other than just intrinsic values (though intrinsic values play a role).
Second, preference utilitarianism is not about your own preferences, it’s about the preferences of all beings impartially.