I'm amazed that you're amazed. It's the bucket listing isn't it. Somehow we all want to experience Paris, New York or Switzerland before we die. I wonder why. There was another HN thread about tourism and travel once, and someone argued, at least with "tourist traps" you know you'll be having an experience, if you do your own thing (that's never been done before) you might end up being disappointed. And travel/free time is limited.
But yeah, the thing promised (e.g. Paris: a magical romantic city) vs the reality (a metropolitan with people who can be rude, plus other obnoxious tourists) differ, I guess your standard tourist lies to themselves saying they're having a great time. Which is easier with Instagram, you curate your own memory, and as a bonus you get validation from other people while doing it.
Life is weird...