I am not a lawyer, but… This does not prove you’re pirating the software. It’s informing the customer (who, as far as they may be aware, obtained the key in a totally legit manner) that the company thinks the key to be a pirated key (of which, it might not actually be, but, rather identified as such by the company or software in error). It is definitely designed to illicit some form of guilt if you did in-fact pirate the software (which is between you and your conscience), but it is not proof that you pirated it. That said, I totally back what this company is doing!