The thing is, poverty and ignorance have never been given the sole reasons for relgious extremism. They are given among a lot of complicated issues, cause and effect...etc.
However, it is taken to be seen that way cheerfully, because Western cultures have long defined Islamic countries with poverty and ignorance as opposed to theirs. It's their place. And they are not myths. They are just not the sole reasons, but then anyone who has a little idea about sociology, socio-economy and anthropology knows that.
And of course there is no mention of Western international politics constantly profitting and benefitting from religious extremism. Why, because if you are making a video that you want Westerners to watch/share, you had better not to point to their bullshit. They wouldn't listen it or share it at all. They do not like to be called out on that, but then most of them are living in warm delusion anyway. So get apolitic, appeal to their delusion and blame people, it's easier.
Also it is bullshit and it is bad for you.