Harley customer base is 51 years old. Millenials, have little use for Hot cars, which we friggin' drooled over and still do. Little use for motorcycles, And, and and losing interest in screwing.
What millennials do desire ...they want for free.

Now, if Harley was to bring back something like the old sevi-cars , and fill the back up with batteries and make an electric MC, like they failed at 10-12 years ago. Maybe a millennial would take a look. Premier parking places in urban millennial haunts ( example Whole Foods) are #1 handicapped....#2 parking for electrics or hybrids.

Harley is afraid to market electric bikes or scooters in their dealerships.... for fear of losing more of their aging customer base.

As an aside, Harley is in talks with VW to buy Ducati.

I have owned a number of Ducs, still ride European bikes.... the last Milwaukee vibrator I had was a tank shift.

And then there is the Indian.......