Who are you to determine who is fit to vote or not vote? The point of democracy is that EVERY citizen has a say in their government, despite how insane their belief system may be.
Regardless of this and to put focus on those that publish this nonsense, of course there should be real consequences and liabilities for the outlets of these insane stories.
Presumably this is why the poster you responded to is questioning the democratic system, so you haven't really presented a counterargument here.