Nope. It mines BTC since XMRig allows for you to mine any coin you want using unminable.
You need to specify what coin you are mining (BRC) in the config along with your BTC address, mining pool address, port and miner name.
Just check out a tutorial on it. I don’t need to touch anything else but Bitcoin. Why are you trying to imply that I’m doing that when it’s not necessary to use the software & isn’t what is happening?