The real reason is Harley is losing their ass at the moment and needs the cash more than the diversity.
Of course, they won't use the cash to do anything fresh. They'll simply do the same thing they've done for 50 years. They'll polish the turd with enough slick advertising that they'll have the poor bastards that buy one of their bikes thinking he's Peter Fonda by the time he's leathered up and riding out of the lot.