Isn't it a betrayal if Chinese idols don't wear Hanbok?

‌They want to gain popularity and
make money by coming to our country,
but they ignore our culture?
If this isn't a betrayal, then what is??
They don't wear Hanbok during holidays and don't even bow.
If they're going to act like this, they should just go back to their own country
to be idols; why do they do it in our country?
It's not like I hate all Chinese idols.
I like people like Victoria and Yuqi.
They wear Hanbok and respect our culture.