If you are running Linux non free software in the exception, not the rule. I myself can’t think of any that I run.

Try

    sudo apt install vrms

Virtual Richard M. Stallman. This is hilarious, I'd never heard of this. Thanks for sharing.

No surprises on my system except for the firmware-intel-* packages. I thought those were free software? Must be binary blobs.

Yup. Which is why the real Richard M. Stallman has often used MIPS laptops.