I can guess what he'll say. It's the usual tactics of the wannabe fascists. They simply point to one of the fully evidenced arguments put forward by decent people, that refutes one of their lines of propaganda, and call it a conspiracy theory.
They know they can't refute the evidence, but they also know that as long as their audience is unwilling or unable to review and understand the evidence (which in general they are), they will agree it's a conspiracy theory.
The supporters of fascists will always swallow lies that paint them as superior to another section of society. Hence the wholesale swallowing of lies as risible as the children-eating Democrats. All our wannabe fascist will do is point to evidenced arguments and call them conspiracy theories. He won't convince us, but that's not his goal - his goal is to add to the sheer volume of lies that enable totalitarianism.
Could there be any greater conceit, than for someone to believe that the universe has to be simple enough for them to be able to understand it ?