If the "unhinged conspiracy theories" turn out to be at least partially true, I'm sure we'll find out it's happening regularly, but only started within the last few weeks. This could easily be the first of the "we would have seen it" cases, not some unexplainable solitary incident.
> the known facts don't match a government disappearing program as well as they match other possible explanations.
Maybe? The known facts about the way he was removed from his university job and web presence with absolutely no explanation and being referred to the FBI when asked for reasons arguably matches better with a government disappearing program then any of the other possible explanations offered around.