At some point "modern" lost all connection with being modern ... then we had to be "post-modern" ("After right now" or futuristic? No, because for the people with nothing to sell but BS, "modern" was already over ... because they couldn't make money from people who actually understood the meaning of their words.)
So ... is a bike styled after an older bike "modern" if it was just constructed? Is it "ironically modern"? "Hipster current"?
Once "modern" has a definition besides "stuff from now," it becomes meaningless. So here we have a bike from 2010 which is not "old-fashioned" (because that is an old-fashioned thing to say) and is in fact the "Antithesis of Modern" .... despite its being a modern bike, strictly defined. On the other hand, a bike which is fifteen years Older, can be labelled "Modern."
Normally I can find some humor in this sort of thing ....