At least Richard Stallman is an actual celebrity, of sorts, and goes on lecture tours. Have you seen the riders of big bands? They are formatted exactly the same way; do this, don’t do this, etc. People who have never seen these kinds of documents assume instead a personal relationship context, where this kind of language would be horrifying. But this would be assuming a personal relationship, where this is instead aimed at more business-like relationship of hoster and featured speaker. This document should be compared to the likes of “no brown M&Ms”.