No, you're still laboring under the impression that travelling through needlessly tedious areas is content. It's not. That's basically a loading screen.
What
is content are the objectives IN the world that you're travelling through. And when that content is good enough to merit stopping for, it won't matter how you're travelling.
I won't skip content because I'm flying. I'll skip content because it's garbage. If the only way you can get me to do garbage is by giving me no other choice, then your design is bad. If the content is good and interesting, I'll do it because of its own merit, not because I'm forced to.
Flying won't trivialize the content unless the content is already trivial and bad in the first place, and just because flight is removed doesn't automatically make it good or worth doing. That's the entire flaw of your argument. You just don't want to admit it.