I personally believe both directors and producers except backlash to snowdrop from koreans for involving a sensitive issue in the drama. i feel like they choose jisoo because of her and bp popularity in international most of the blinks and international fans doesn't care and known korean history. And blinks are waiting for jisoo drama for such a long time so no matter what happened they continuously defend the drama for better or worse
Anyway it is really sad i didn't watch kdramas or hyped for it now it is all for nothing and snowdrop is cancelled we may not seen jisoo in another drama the incident may be set her back and become more cautious