irl I usually see POC or BIPOC used in three ways:

• Someone is pissed and wants to weaponize their or someone else's identity and not think any deeper than "you just did a racism becauss that person you criticized? Yeah they're BIPOC". That someone is almost always a liberal and the person in question is usually being validly criticized.

• HR types talking about their DEI program.

• The nicest and most empathetic lefty on the planet is trying their very best to be inclusive while organizing.

I also try to just say brown or black etc it's just so much less awkward.