"For an ordinary vacationer, sure,, there'll never be a day Internet & phone service is unavailable."
Coming to Montana will be s shock to you, if you truly believe that. There are vast stretches of highways in this state where cell service is poor to non-existent. There are campgrounds where the wifi is so slow or spotty that it might as well not be available.
However, there are campgrounds where they have installed a "cell phone amplifier" so that if you stand in exactly the right spot, you can make a call.
A CB radio is like any other "just in case" tool. Now that the distance limit has been done away with, it is even more versatile. Maybe there won't be anybody local to talk to, but you just might get in touch with somebody hundreds of miles away who can make a phone call for you. Just remember, the key to effective communications is not so much the radio as it is a good antenna mounted in a good location on the vehicle.
That radio just might save your life someday. CB has saved lives in the past, and I have no doubt it will again.