You guys are a pretty gloomy lot, verging on whacked. Then again, I guess that comes with the territory (this is a survival forum after all).
To answer the OP questions, Are we living in the last century of our civilization? Is it possible that all of our technology, knowledge and wealth cannot save us from ourselves? Could our society actually be heading towards collapse?
Probably no, to all questions. Doomsayers have been asking these questions, and answering affirmative to all for centuries. The OP doesn't even point to a news story. It's a promo for a TV show, fer cryin' out loud.
If there is a threat, it's the continuing threat to personal liberties from governments around the world. Yes, that includes the US, though it's far from the worst. Freedom to engage in trade, freedom to move, freedom top pursue our interests as we see fit, all create a sustainable world where prosperity grows. And where primitive skills are increasingly irrelevant. Yes, that is a good thing.