I was, initially, trying to make the point that assuming staff are monsters by default is a damaging trend in this hobby.
But frankly, if simply making that statement with an example of someone doing it gets me accused of shit, I am going to go for the fucking throat and there is not going to be an apology for it afterward.
It does, actually, demonstrate why it's a problem.
On one hand, you've got the reality that people who work hard to ensure they are being fair and reasonable and all the rest, usually making sacrifices to do so and getting no small amount of abuse for doing so, are not exactly doing it because it's super fun. Generally speaking, they're doing it because other people having fun, for whatever reason, is important to them.
The reason can be a shitty reason, but isn't always the case. Some people might want everyone to like them, or heap praise on them, or whatever else along those lines, but most people I've come across understand the basic principle that the more peaceable the kingdom, the better the odds are that fewer problems will arise and the more fun they will get to have, too, doing the same things everyone else is supposed to be doing: just playing the damn game.
I don't take this quite as far as @Ganymede does in its interpretation, that whichever party is the most grating presence, right or wrong, should be shown the door, but I do think people go too far on handing out the twenty-second chances for some of the worst offenders. (Spider being a prime example.)
There is a point at which being "fair" in the handing out of 'just one more chance' to people consistently doing damage to the well-being of the game community becomes unfair to everyone who is subject to their outbursts, abusive garbage, creeperism, or whatever their particular bit of nasty is.
I don't even pretend I have the solution to this one. While I don't agree personally with Gany's, she has one that works for her, and if it works, it's more than what a lot of places have.
A big difference in how a MUX works vs. a tabletop game is simply this: people generally have to earn their welcome to a spot at the table. We can obviously have invite-only games, and there are some out there, but that still isn't quite the same thing. A MUX needs more people than the average tabletop game does to properly thrive. The closest thing I have to a 'solution' is based on this, to some extent -- that being that some folks, and they're very few in number even after close to 20 years, have earned not a welcome, but an unwelcome. Spider, Jeurg; that class of 'unwelcome presence'. VK -- used as an example since it's all present here for clarity and thus makes a good example -- may have obviously pissed me off and I may be personally wary as hell of her, but she does not even come close to the level of consistent horrible that, to me, would earn an 'unwelcome'. There's nothing she's done that suggests doesn't care about the rules or is eager to break them if she can find means to do so to benefit herself, that she thinks rules don't apply to her, or that she thinks lying to other players to get around no-contact requests or exploiting them for her benefit is OK. I'm talking about people who make consistent practice of these kinds of 'the rules are only there when it's convenient to me or I can use them or staff as a weapon to browbeat others' behaviors, not people who I find personally irritating.