For example, Warren seemed incredulous that Magister Harris refused to consider a "Satanic" world, or mass conversion, or what a world would be like if only Satanists existed on the planet. Harris refuses the notion because it's completely counter to the Satanic worldview. Warren presses him because he doesn't understand why a religion does not have such an evangelical worldview; he assumes that we would naturally.
Another example is the interview with Christopher Mealie and Stephanie Crabe. Warren, again, seems unconvinced that Mealie and Crabe are monogamous, and you can hear the doubt in his voice. Mealie dealt with this in biting humour.
I just thought that I'd offer how I have sensed those parts of interviews.

I can not know how it was meant, but...
When Joshua Warren was showing his
'doubt' about certain responses, to me it appeared as having an intention between lines, meaning "Please, repeat it for a viewer once again, so he clearly understands what you are saying".
Because, when one knows how 'common men' cluelessly misinterpret Satanism, it seems that certain things (everything?) need to be emphasized...