Have no idea of any intended joke or any basis in reality or rumor. Only thing I can suggest is based on having seen the production "facility" for the CVO bikes.
The V-Rods are done in KC. The other models are done in York. The York lines are almost totally manual, short, and there are two of them. There's also not room to add to them (at least in the same building they are now).
Given the limitations of what they're currently working in and the way they described picking and training personnel to man those lines they simply don't have space or people to add models. At least not without cutting back on production of the ones they're already doing they don't.
Granted, since it is a manual line establishing another is little more than stacking up parts, carts and workers in some empty area of floor someplace else. But given the logistics involved in supporting it relative to what we saw in the CVO facility it honestly seems unlikely.