FWIW, the top of all pages reads...
"We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissable in your locale."
Chris just doesn't want to deal with the legal liability of allowing commercial traffic of questionable goods on his site. He pays the bills, that's his right to do so.
You also have proven over the years to be rather obtuse and abrasive when confronted with concerns about your commercial activities, and that leaves a bad taste in peoples mouths.
+-RH