But Kier did say a few years ago it was "Built with Xenforo Code".That's not built in XenForo.
The XenForo front-end site (anything not in /community) is nothing at all to do with the XenForo code.
I think your explanation is correct.Isn't this just another "xenforo instance" without the forum?
Doesn't the html sourcecode of the pages look really familiar? e.g. like xf 1.0