Going into /pol/ territory here, but most nations have their own propaganda they shovel feed to their population.
Its like fast food in the way a lot of this is unhealthy for you and in essence leads to unhappiness.
What IG travellers like the above youtube sluts pic fail to understand is travel is more than going somewhere and taking pretty pictures, its about viewpoints, philosophies, methods of doing things differently that are 1000's of years old. Extensive travel forces you to break the mold. Forces you to reject your own homes beliefs and ways temporarily only for you to rediscover them again.
You shouldn't travel to return and hate your home, family and life, thats toxic as shit, you should travel to come home and appreciate what you have or if it is worthy of your spite have new solutions to test to remedy, fix or cope.The world is a library and although some overs of IG are the types who go into a library just to look at the pretty pictures, there are plenty of other people who seek insight and knowledge unattainable at home or via the internet and thus research their interests.
Also Culture through the internet isn't reflective of people. Look at Australians online, they're the biggest collective group of assholes on the planet online yet in person they're happy and friendly, the total opposite of what you'd expect if only seeing them via the internet.
I'd also put Brazilians into this category too.