I said that children will learn the dominant culture they are born into, there is no alternative, but that doesn't mean they have to be propagandized to think that theirs is "best".
Yes and No, your diary portrays children learning the culture of their parents as bad, not completely avoidable, but something to be minimised as much as possible. You speak of schools and 'universal characteristics', whatever that shall be.
Nowhere in the diary you distinguish between chauvinistic elements of a culture and the cultural norms in general. You bemoan, that children look on multi-culturalism from the framework of their own background. So you want to deny them a home, a root. They should be just a tabula rasa without anything, until they themselves by random fate decide what they want. In contrast to what you write, it is this spiritual homelessness, which allows Pied Pipers to get people into a shelter, filled with hate, anger, and the will to neglect any respect to those living elsewhere.

Der Amerikaner ist die Orchidee unter den Menschen
Volker Pispers