Firstly, there was no disregard for the law. I answered a technical question. The OP asked how to select the black pixels in his image and I explained to him how to do it. I did not enquire why he wished to select the black pixels or what he wanted to do with the image - I don't really care why he wants to know, but I explained a perfectly valid method for carrying out a task in Photoshop.
Anyone who read the first post in this thread knows the OP did NOT ask how to select the black pixels. What he/she asked is for someone to help use the dove image as a logo and watermark. THAT is commercial use and quite possibly a violation of copyright law. You gave instructions on how to do that.
If someone tells you they want to break the law and asks you to do them a favor by helping them break the law and you agree to be their accomplice, then you may be held liable - at least you
should be. At the very least, it's reprehensible that you would publicly help someone break the law and even more reprehensible to deny your culpability by misrepresenting what the person asked for. It's fortunate that so many others encouraged the OP to do the right thing instead of the wrong thing.
To be sure, your advice would have been appropriate,
if the OP hadn't suggested in the first post and then confirmed in the 13th post that they do not have the right to do.
Jim