Earlier quoted context omitted.
"All of his demands are either directly related to his health or the moral causes that he champions." Did you read the same list I did? He requests to stay in somebody's home but specifies a list of foods he doesn't like and demands he be consulted on any meals he's served. Some of his demands relate to his cause, and a few to his health, but overall I'd say he comes across as overly particular and demanding. I guess…
Written out in black-and-white it seems rather cold and heartless, but it merely clarifies what would be a normal practice. If a guest in your house is uncomfortable/unable to eat what you're having, and has given no prior notice, then it can be quite a problem to find out right when mealtime is approaching. This is a sensible way of avoiding unnecessary conflict.
I think I'm generally a good host, because I read people well. But armed with a document like this, even someone who reads people terribly could be a good host to rms with minimal effort. It doesn't look very hard once you know what he's hoping for; some of his points (like saying he sometimes makes suggestions that may cause inconvenience, and please let him know... like his request that hosts not offer to help him with everything) are basically "I know how to be a good guest if you let me."
I've been in those situations (carefully avoiding praising things for fear that your hosts will find some way of giving them to you...), and it's really quite frustrating.
If I was a constant guest (and constantly faced with the same frustrations), I'd start compiling a document like this. Over time -- and I'm pretty sure this has been underway for a long time (notice the reference to changing the tape when recording him?) -- I suspect it would grow as this one has.