I don't know. Have you ever read Stallman's appearance requirements[1]? I mean, yeah, it's probably a joke. But I wouldn't be shocked it it were true either.
How is a host meant to figure any of the details in that rider out ahead of a Stallman visit without him telling them? It could easily be a log of all the things that have gone wrong for him in the past.
People like to go to the parrot quote. It wouldn't at all surprise me if a Stallman fan who was putting him up the the night tried to buy a parrot if they thought it would make him happy. The man's selfless dedication to the public good has earned him a couple of true believers over the years.
It is also comprehensive and doesn't mention anything about Vi.