I agree they should focus on what sells. if 11 models added together are only 6% for total sales that is fat that can go.
That said, focus on core customers does make sense. However they need to figure out what the core customer wants, and define the core customer.
I would think my wife and I fit core customers or the people they want to keep. Since 2009, between the two of us its been 15 new bikes, all but one touring bike. In that have been 7 CVO bikes. We each ride an average of 24,000 miles a year.
In these 11 years the quality has continued to go down. My 2019 CVO is horrible quality. I have had more warranty claims on it than my other six added together. Resale value has tanked on the bikes. The cost has continued to go up, the content on the bike has continued to go down. The same frame and suspension is still used from 2009. Head unit has been improved twice but still has lots of issues, blown speakers and not working as designed. New motor is very nice, but had major issues for 3 years. Suspension was at best ok compared to others brands in 2009. Today it is plain garbage compared to other brands.
Suspension for example, add Ohlin HD-259 rear shocks, 13" and Legend Axio front cartridges to a touring bike, my 13 King. About 1800 dollars in upgrades and the bone stock Indian challenger rides better, handles better, for less money.....Not going to mention how much better the Goldwing is
Harley needs to update, and improve its touring bikes, as they account for almost 2/3 the sales. They need to handle, they need good suspension but most of all they need quality and reliability. Especially when charging more than the companion.