My nearest Moto Guzzi dealer is a 7 miles away. Would I use them to service my 2016 Eldorado 1400? Not a chance. They've only been a somewhat disgruntled Guzzi dealer for about 2 years. I'm not sure if they ever sold a Moto Guzzi. So, they've likely never seen or heard about an Eldorado 1400.
The nearest Moto Guzzi dealer I'd trust is Cadre Cycle which is about 360 miles from me. If need be, I'd strap the Eldo to a U-Haul bike trailer to get it their.
No, that doesn't bother me in the least. My other bike is a Victory Hard-Ball, I have a dealer within 30 miles of me. After this year, they'll likely stop any support of Victory anyway. Fortunately, my Victory bikes continue to be 100% reliable 100% of the time for over 150k miles so far.
The 2016 Eldorado is new to me but it only has 2000 miles on it. It's too early to know if it will also be 100% reliable 100% of the time. My previous Guzzi biles were all that reliable.
Ride what you want, but worry about it much less. If a servicing dealer is a must have pretty much anywhere you are or could go: your only real option is a Harley-Davidson. There’s nothing wrong with that option as they’re making great motorcycles today.