As Proust put it in his somewhat overused but in this case relevant quote "The real voyage of discovery consists, not in seeking new landscapes, but in having new eyes". Understanding the human experience is first and foremost learning introspection, not tasting thousands of different fruits. Everything you can learn about the human experience is probably somewhere in that little valley where the man lives already.
Yes. If he'd tried eating a variety of foods and hated it, I'd say fair enough. But how can you possibly know something like that without having tried it? To just dismiss so much of human experience without even considering it is honestly tragic.