WTF is that supposed to mean? They can feature shit bomb CB750's and Ducati scramblers, but your bike is not quite right for them? I think Bullshit Hipster Bike Video's is spot on about that website. They like the idea of bikes as art, not bikes.
http://hipsterbikevideos.com/
Just in case you aren't familiar with that site. Lots of fun. Seb, your work is fantastic. Don't read into that email too much.