NukeCops - Yet another copyright problem

I've tried to persuade a nuke site admin who had removcd copyright notice but failed. The website, PHPiCalendar, is still running without footer notice.

This website is promoting GPL product, PHPiCalendar. I'm for Free software and I don't want to throw a wrench to the developer. I just want to put things right and make sure they can avoid unnecessaly conflict. What do I do? I need your help.

First I send email to notice that and asked to put them back, then I pointed things out and showed link to this article at their Forum because I had no reply (the site admin said he did, but sitll I haven't).

The first answer was that PHP-Nuke contains an icon made by Apple, by which the site admin is employed, so he/she didn't have to show Nuke's copyright. At first I though Nuke have to remove that before claiming its own copyright but in the next second I startled back and read the footer text again. It said that all logos and images are belong to their authors. This means Nuke doesn't have to remove that icon.

But sadly when I replied pointing to that, the site admin announced that he/she no longer will discuss this issue.

I'm so upset now so I can't keep talking with him/her any longer either. And besides it's too difficult to me to discuss such thing and persuade such a rottweiler person in non-native language. So I need your help.