Actually, if you want to be precise, they have been selling blue iris for a few months. Blue iris have been recommended on that site for 5 years before they sold blue iris. Furthermore, when you posted the same question on the site, one of the owners recommended NXwitness to you - they dont sell NX. There goes your conspiracy theory. Why would he do that? There are also subforums there for Milestone, zoneminder, ispy and sighthound. They dont sell any of those. They also sell rebranded hikvision NVR's, yet those were not recommended to you. Again your conspiracy theory fails. Blue iris recommended because its exceptional and low priced.
Xeoma is banned because Xeoma has paid and still does pay users to write fake reviews. - this is explained on the site. Note also that Xeoma is Russian - trust them like you trust the Chinese.