I disagree.
The video is mostly bashing on the 'left'. Left and right are political labels that have different meanings for different countries, but the guy in the video makes it sound like the left is a homogenous political movement. While I disagree with almost all the political ideas he puts out, I don't want to discuss them in this thread.
He presents no historical evidence for the claim that non-religious societies collapse or implode. There are tons of non religious countries that are doing extremely well economically and socially (Finland, Norway, Japan, Denmark New Zealand, Australia etc etc) and there are tons of religious countries that are in a world of trouble (Venzuela, Honduras, Guatemala, Pakistan, Afghanistan, Iraq, Iran etc etc).
He makes no arguments for the necessity of a belief in God to maintain moral values in society.
Finally, me makes no arguments for Christianity itself. There are a million different religions, most of them with mutually exclusive beliefs.
His entire argument seems to sense from the fact that given the overwhelming negative nature of our society(which is false by the way, human society is farmore peaceful than it has ever been
source:
https://ourworldindata.org/war-and-peace), we need a positive guiding light to overcome it, to which I can only reply with this quote from George Bernard Shaw
"The fact that a believer is happier than a skeptic is no more to the point than the fact that a drunken man is happier than a sober one."