In reply to Dumitru Brinzan.

Using a stolen credit card (which results in a chargeback + penalty for the author) to buy a GPL product and then sharing it on blackhat forums – there’s nothing ethical about that.

Who said anything about using a stolen credit card?

There's nothing wrong, immoral, unethical, or dishonest about sharing software released under the GPL. The right to do so is specifically spelled out clearly in the licence. Sharing GPL licensed software is not blackhat. There's nothing blackhat about it. It's how WordPress works.