You know what?! I think you are on to something. They need a person to represent their enemy. Someone to be that strawman. This gives them the surreal idea that they can shoot and kill that enemy. Somehow that is the only way they can make their “common sense” make sense. If problems are too big or complex, they can’t rationalize it. Blaming everything they consider bad on a person is a perfect solution.
That already happens with Satan. Unfortunately, some enterprising evangelists have convinced their congregation that he is not only real, but infecting people the pastor doesn’t like.