Great points, all. I have heard nothing as far as protests from the groups that hold Charlie Chan with such disdain. Perhaps they lay off today's usually politically correct Hollywood. Or, they may simply shy away from going after living actors. etc., especially those usually in the Hollywood "mainstream."
I have no plans to see the film in question, and, I would certainly be offended - and embarrassed - if what is described is close to reality. There is a huge difference between a purposeful "stereotyping" of a member of a specific community in a movie and a PERCEIVED "stereotyping" that comes out of a performance or production that honestly sought an honorable, positive, indeed heroic, portrayal.
