To your devil's advocate: If you put 5 sporadically placed in different scenes totally irrelevant to the story PoC characters that aren't all bad guys in a film with absolutely no racial stereotypes would please most of us (some will argue that there should be a main character PoC). One could be a royal solider/guard, another could have been in the pub (Tangled), there could be a small family in the town, a suitor (Brave) etc. and it would have been better then what we have now.
Yeah. Like naturally, people will complain if there’s only one POC, because the whole throw-one-in-to-ward-off-complaints-and-never-give-them-the-starring-role thing has been done to death, but yeah, all that which you said.