That's not what "empirical evidence" means. Empirical evidence is something we observe in the world. If we set a definition "all murder is illegal" and then we conclude "legal murders do not exist", do we have "empirical evidence" that legal murders can not exist? Of course not. We can conclude the claim is true by definition. That's not empirical evidence.
> You ask for empirical evidence ...
I never asked for empirical evidence for non-banks' inability to create money out of thin air. Werner claimed to have empirical evidence for this, and I merely pointed out that he does not have empirical evidence for this, contrary to his claim. If Werner had instead said "due to accounting conventions, we declare banks' IOUs to be money and non banks' IOUs to not be money", I wouldn't have any problem with that.