I dunno man. Going to PA, I'm only stuck in the airplane for a couple of hours. The alternative presented here is being stuck in a Tesla for days. Personally, I'd give a lot to avoid that.
I ran several routes and it recommended flying on longer trips. I think the larger point here is Tesla FSD changes the game as far as what's "stressful" and what's not. I generally take the Tesla on anything that's a day trip. Will fly if it requires a hotel/overnight. But I know people who sleep in their Tesla's now rather than flying ha.