Trouble with motorcycles is, at least in the EU, too many years of governments putting the fix for bad car drivers onto the motorcycle license. The capacity limits and multi-part test etc are quite off-putting for new riders. Unsurprisingly, it's still car drivers causing most rider deaths. On the plus side you develop a definite 6th sense for those that will pull out - whilst looking straight through you. You also end up a much better car driver.
Lifestyle ranges are part of the problem of decline. The manufacturers, Harley included - perhaps especially, have catered more and more for the born again bikers spending a lot of $$$ in their 40s+. The cost has got rather silly and many models, even Jap middleweights, have reached the cost to buy of a cheaper car. When I started only the Goldwing and rarer Italian managed that.
So whilst I'd love for an EV bike to revitalise things, I suspect they'll be more of the same for the 40+ born again biker.
Source: Almost 35 years of motorcycling and trying to encourage the kids to take up biking.
Edit: This has been gaining plenty of up and downvotes. I'm intrigued - what's controversial here?