If the gist of that statement is that white people shouldn’t write shows about Asian stories then are we going to retire Pacific Overtures because Sondheim and Weismann are white? Or was it that this particular take on an Asian story was tainted by some prejudice that you believe they must have because of their race?
As for Miss Saigon, do we want to deny that there were prostitutes in Saigon because any such depiction is stereotypical? As others have pointed out if we get rid of this show then arguments exist for so many others to follow suit. Personally I enjoy this show very much.