You should try and and do what the OP is suggesting, i.e. to try and put yourself in your dad's shows and try to see the world the way he sees and understands it. I.e. this type of conversation goes both ways.
Becoming conspiracy theorist yourself is not a way to prevent dangers of conspiracy theorist. It will make the issue worst - instead of one conspiracy theorist, we now have too.
Not being like them is a good life goal.