Offended by People being fake

People often seem offended or express a disliking towards people who are "fake". This is an interesting reaction because it automatically supposes the existence of people who are true. Real true people though are very seldom cases as being really true would mean following your biological needs at any given place, exactly when you need to. Since this is done by only few people, considered of course crazy, we have to admit that some kind of filter exists between the true self and the acts of the certain person.
This filter is often aesthetics, or ethics, which is hardly different.
Since everyone filters his biological needs through their own ethics and aesthetics, complaining about someone's fakeness, is mostly complaining about their "edgy" aesthetics (weird way of talking, dressing and so on).
It is like asking a drummer to play in a jazz band.
If he is not experienced he will say that he is not "into that kind of music", that this music is "pretentious", and so on.
But a real experienced drummer will always be able and eager to jam along with anyone, knowing that it is the jam experience that counts and that something is always gained by every musical interaction.