"Faking the Upper Planes would be very difficult. I'm sure people have faked regions of it for deceptions, but for what I've seen to be a deception … they would have had to bring in some actual high-quality expensive infrastructure and disguise it as Upper-Planes-ish or rapidly relay information from real infrastructure elsewhere to the mockup, or they'd have to be colluding with my wizard friend long before having determined that lying to me in particular would be useful, or have seamlessly replaced him at some point. They'd have to not just hide from some of my exotic senses but actively forge results for them, and I haven't seen any illusion magic that can do that."
"Hari people seem to like privacy a lot so I thought I'd clarify that this exotic sense doesn't detect anything about Hari people. It's for detecting the magic thing people in my world are made of but Hari people are made of their brains instead. …language. Anyway."
"You'd have to fake interplanar relations between other factions and the Upper Planes, which would again involve fooling my exotic sense to impersonate other types of people. I've met with … let's go with the translatable thing and call him Big Ear. Actually, no, he was explicitly allies with Axis and the Upper Planes even if he hated them, never mind. Anyway. I've met with enemies of Axis and the Upper Planes who don't cooperate with them at all and would probably love to ruin their day, and they never told me that the Upper Planes or Axis misbehaves in the way you describe? I've met mortals who the Upper Planes and Axis would have trouble colluding with who had complaints about both and none of the complaints included dishonesty in the relevant domains. …Axis does promote the false theory that some faraway portions of the world don't exist but I suspect they openly admit to promoting falsehoods in situations like that, and it's plausible that they avoid making the claim too directly as well."
"I've found suspicious patterns of disappearances before and none of them were about Heaven or Axis's behavior."
"Do you have follow-up questions?"