Actual important things are likely defined by the society they exist within. The identity of a citizen as an example.
Society isn't important - mass society is an distraction. Most - if not all - the problems in this "civilized" world that we live in comes from the fact that the hyper-industrial system that dictates our lives leave us with almost zero autonomy, thus provoking evolutionary maladaptations and rampant pressures. Even political activism isn't nothing more than a surrogate activity that people - deluded by the modern illusion of "self" - partake in to try and aliviate their feelings of inferiority or just to comply to some latent need for moral obedience.
Be it through the struggles of fighting for a cause, or the directive identity created arround some ideology, identifying with these cultural delusions is not important. Extending your "self" throughout ideological systems is a way of coping with the sense of hopelessness brought upon you by civilization.
Saying that identity politics and culture are relevant is the same as saying that antidepressants can assure your fundamental well-functioning. You're looking at a symptom here. Your inexplicable defectiveness caused by yaers of domestication and alienation is the main issue to be paying attention to, not identity.
