I think that a lot of the "early adopters" will be older just due to financial freedom. The 20-something crowd will be attracted to the price point, but not to the point of putting a deposit down in advance. I image that we will start seeing more and more "kids" on the site once they are readily available in showrooms.
Also, I think that the resurgence in the "traditional" or "throwback" bikes is playing to older guys and gals because of what was said earlier. Folks want to buy brand and model of the first bike that they had, or their dad had. The nostalgia plays well with the modern creature comforts like, I don't know, an electric starter. Those old kickers are not terribly easy on old(er) legs.