@bobsmithvrv they don't, he's bluffing but all of it turns out to be real, he thinks his servants are going along with or or are just deluded, but their research proves that his bluff is right and makes them believe in him even more.
Rereading this after the anime, I gotta say I like how they did this chapter in the anime. Especially the scene with Alpha, I so love how the anime adapted that one.