@MikeT, I think you'd be surprised at how many people keep their Spyders and keep on riding them past the end of the warranty period. For many, the only maintenance usually required is oil & filter changes, and if your Dealer won't touch it &/or you can't do it yourself, many non-dealer bike shops will do that, even if they won't tackle harder stuff - but Spyders that aren't worked too hard generally don't need a heap of maintenance, and with regular oil & filter changes, the Rotax engines basically just keep on keeping on!!
We've got
LOTs of Spyders over here in Oz that're still going strong
WELL after their Warranty has expired, many still in the hands of their original owners; I'd even go so far as to say it's possibly a majority of the Spyder Ryders here who are riding 'Warranty Expired' Spyders, and I suspect it's a significant proportion of Spyders over there in the US too. These owners/riders might not post here much, probably cos they're out riding &/or don't have too many issues, so not too many questions, but they
ARE out there riding and racking up the miles on their 'Warranty Expired' Spyders! We've got quite a few Spyders here that are still in their original owners possession that have done well over 100,000 miles, some much more!
I'm still riding my 2013 RTL, which has more miles on it than many US riders apparently to do in their lifetime of riding, and I'm sticking with it simply cos I haven't found a new Spyder yet that's exciting enough of a ride to convince me to change. A Canyon
might have come close, but apparently Oz doesn't have any call for Spyders that can readily handle long distances on anything but sealed highway...

Yeah, right!
Edit: I should also add that just about every weekend that I'm able, me'n my Assistance Dog cover about 1000 miles tooling around on my Spyder, sometimes double that, and sometimes with the Child Bride on the pillion seat as/when her work/social life allows; and we also do a couple of 'at least 5000 mile' trips each and every year too. You don't really need to worry too much about Spyder &/or Rotax engine reliability, just change the coolant, oil, & filters regularly; replace tires as needed, maybe a belt once in a while if you really rack up the miles (yeah, the belts
DO eventually wear out, but I doubt few will ever reach that milestone!

) and that's pretty much it; the rest is simple enjoyment!
So if I was you &/or your friend, I'd quit sweating on the small stuff, and just...
Ryde more, Worry Less!
Just Sayin' 