Okay, so. I think I've finally managed to actually figure out why this topic is bothering me.
I enjoy GM'ing. I enjoy GM'ing as a bodiless omnipotent narrator who sets the scene, and I enjoy GM'ing with a recurrent NPC. But not all enjoyment is equal.
Maybe I find that GM'ing for Susan is absolutely wonderful. Susan always is engaging. She actively throws out things for the NPC to respond to in the scene; she talks about topics other than just whatever favor she wants from the NPC in question. In short, she makes the scene really enjoyable for me as a GM. I look forward to GM'ing for Susan.
Now let's look at Fred. Fred's a nice guy! I don't dislike Fred. Maybe he's even fun to talk with on channels! But Fred... RP'ing with Fred on an NPC is excruciating. Fred is single-minded. When we get into the scene, Fred sits listlessly, poking the NPC with questions and waiting for an answer to fall out, then poking the NPC with another question. RP'ing with Fred is not fun for me. RP'ing with Fred makes me think of the many, many other things I could be doing at that moment. Writing a story. RP'ing with someone else. Cleaning my bathroom.
I, personally, as a GM will run scenes for both of them. I, personally, as a GM like to try to spread plot and RP around. But make no mistake: in this scenario, RP'ing with Fred is not fun, it is an obligation. It is an obligation I have set myself, but an obligation nonetheless.
I want to point out we've also just had a whole different thread where various people spent time expounding on the belief that the joy and pleasure derived from staffing should be reward enough for staff. And now people are saying that staff should be scrupulously fair and give equal access to NPCs to everyone, regardless of considerations.
That if I do not RP with both Susan and Fred precisely equal amounts, I am being a bad staffer and doing it wrong.
You know what you're doing by that logic? You're telling me that if I do my job 'right', my pay gets docked. If my pay is the joy derived from staffing, then RP'ing with Fred is actively reducing my metaphorical paycheck, because I do not derive joy from it. It is anti-joy. It not only does not bring joy, it kills joy that already exists.
Would it be a better hobby for players in aggregate if everyone got equal plot access everywhere? Sure! Is it something we can aspire to? Absolutely. Do I think games would benefit if people held to the guidelines I've put out in this thread earlier? (I.e., pretty much every interaction with an NPC should try to advance story—or at least offer the potential for advancement—whether on a personal or game level, NPCs should never get to be the protagonist of a plot, etc.) Yes. Have I, in the ungodly long amount of time I've been in this hobby, seen behavior on NPCs that I would not personally have felt comfortable doing? Also yes.
But do I get to dictate or demand that rules be imposed on staff? Sure, if it's my game. Otherwise? The more I think about it... no.
The more I think about this more I'm realizing, what's bothering me isn't with the scope of the rules. I think some of what's suggested is maybe overly broad, but there's plenty of rules I think are beneficial. But what's been bothering me on some level is the implication of these rules: that staff are inherently obligated to do certain things, whether or not staff themselves have pledged to do so.
Because it feels manifestly unfair to say "the joy you take from doing this is your reward and payment", then also demand "and also you should do things this way which we have decided is Universally Correct and are guidelines for everyone, regardless of whether it makes you personally miserable to do." That part sits wrong with me, no matter how much we can claim those demands are For The Greater Good.