even if it wasn't ATF replaced on this unit, this transmission will go on forever pretty much; those hwy miles are not detrimental to its life such as age of cars or low miles that sits for most of its lifetimeIt's made it 250k miles so farIt's also very possible it's had the fluid changed as CarFax doesn't always show every service that gets done. It's like they have a 5 or 6-line max output.
Also, CVT Honda's units are yet to be seen falling apart; these CVTs are in nearly 10 years in the production cycle out there