I'm not sure I disagree. I don't have numbers but, anecdotally, you sure hear a lot of "But flying is such a hassle" which is sorta true but not sure how much more than it's ever been especially if you're willing to pay a bit more. I'm not sure how many people translate that into "So I'll just drive 1,000 miles instead."
In Europe (and the US Northeast Corridor), I do favor trains to avoid going to and dealing with airports, but they're no panacea either. And I say this as someone with the various passes that make flying easier.