Like master-slave, the metaphorical use of white-black to connote good-evil is oppressive.
There is even a name for this pervasive language pitfall: the association of white with good and black with evil is known as the “bad is black effect” [Grewal].
Indeed, there is an entire book on the subject, written by renowned authority on race, Franz Fanon. In his book “Black Skin, White Masks,” Fanon makes several persuasive arguments that standard language encodes subconscious in-group, out-group preferences
"PoCs" is for people of color, all those identifying as non-white. It's not racist to use these terms, it's racist for you to denigrate them as "boiling people down". Thinking these terms are racist is a property of whiteness. I highly suggest that you read https://en.m.wikipedia.org/wiki/White_Fragility by Robin DiAngelo so you can have some introspec into your white fragility. I'm being sincere.