I think identity and authenticity are separable and distinct. I agree there is nothing to identity. But there is something to authenticity. Food, art, etc., are intentional creations and there is value in getting an authentic experience that’s the product of application and refinement of a particular set of principles. That doesn’t mean that other things can’t be delicious, of course. But experiencing something “the way it’s supposed to be” has a non-zero value.

Attaching that to your identity is bullshit, though. Neapolitan pizza makers might have some set of principles and practices and you might have an authentic neapolitan pizza that reflects those principles. But that doesn’t give Italians in Naples any authority to gatekeep pizza or even neapolitan-style pizza.

There’s a lot to be said for shared culture and customs. I am a second-generation American, and I love the familiarity and uniqueness of my family. I think people get really wrapped up in this idea of food as a proxy for culture, which makes sense, because food is really important! But shared culture really shows its value in the hard parts of life: for example when someone dies, there is a shared script, a defined way of making space for grief, a shared way of remembering the dead, etc.

Anyway, obviously cultural identity isn’t inherent: you know what you grew up with. And it can easily turn toxic when we move from appreciating our own culture to putting down others’. But my life would be a lot poorer without it.