It's way too early to make a call like "so far it's been a flop".
And remember, buyers don't necessarily think in a logical manner, as opposed to most sport riders.
As a sport/dirt rider, I have no idea why anyone would buy any Harley, ever. Yet they do.
It will be another year or five before Harley's future becomes apparent.
I'll not be too sad if they fail, especially after they murdered Buell and Alta.
Almost no motorcycle purchase is logical at this point. Between the danger and cost it doesn't make sense as a mode of transportation.
As far as sport/dirt riders being more logical than Harley riders.. I'm not sure that is accurate. 99% of sport riders can't ride what they have to its full potential, does that make their purchase illogical? 99% of sport riders don't go the track. Does that make their purchase illogical?
People just have different preferences for what they want to ride. I love sport bikes but not a fan of the riding style or position. I don't ride to beat anyone in the twisties I mostly just enjoy cruising up the mountain - looking at bikes - hanging out - heading to the coast.
On another note, do we know if Harley was the cause of Alta's downfall? I know they pulled out of funding but I don't believe Harley would pull out of Alta for stupid reasons. Everyone LOVED those motorcycles. Something must have been off about finances, costs to build, management, something.
The fact that nobody else stepped up to fund Alta is also questionable. If the company was the chosen one of electric dirt bikes wouldn't another investor/investors step up? The fact they just shut down one day due to finances makes me think there was more to it.. but speculation is speculation.