Nabashalam, I looked at the video, opinion is this what gets me is people that know little about the Bible and assume Christians talk a lot about the devil. Most Christians teach little on the devil except he sinned from garden or creation. After that little is really ever said about the devil. Actually most of the Bible never references devil but evil leaders,kings, as well as people in general.
The fact is only certain groups of people have I ever heard talk about satan more and that either those that worship or fear satan in some way. Like the fear of the boogey man, or the fear of drunk parent coming home. A fear of rapist in the neighborhood. A fear of someone using power and control. Seldom is Satan ever discussed except in the context of evil people. So after watching some of that video you provided, I disagree with that person's thoughts on the subject. Most minister I have ever heard speak about God and about God's love and never the devil.
Even with research about the devil scripturally very little is ever said, why because man can tread on serpents. They have no power. It more about a person living as they should and worship and praise to God.