Re: "half true". CC this is a propaganda video by Warner who has no credentials whatsoever as an historian. Here is a Reddit link to a critique of one of his so-called lectures.
https://www.reddit.com/r/badhistory/..._secret_by_dr/
It has zero historical value. It is just part of the neurotic American Islamophobic industry.
https://www.splcenter.org/fighting-h...m-inner-circle
There are life long careers and plenty of money for writers and bloggers who work in these three areas, the Holocaust, anti-Semitism and Political Islam. These are money making industries and in order to keep the flow of funds coming in to support them, people have to keep scaremongering about them continuously. Warner is just one of these. The link from the Southern Poverty Law Center lists the most well known ones who are active in this field.