It's almost as if there's a big ol' tension between the people who have their own story first in their mind and the people who are more willing to get screwed by a random roll of the dice.
I also think people who are comparing MUs to writing a story or watching a TV show are missing the point. Even appealing to tabletop is a bit odd. A MU is none of those things, not really - it is far closer to improv theatre. In a MU, you're not always the protagonist or the biggest star. Sometimes, your character is the guy who shows up in the background or delivers a key to the person who will Do Things.
I really like surrendering part of my character's agency to the dice or to the whims of other players. This is, however, incresingly hard to find.
What isn't increasingly hard to find are people who, say, taunt a character for half a dozen poses, or even attack them, and then attempt to no-consent out of consequences.
Unfortunately, a lot of players are realising that they can hide behind the banner of Consent-Based Ar Pee when things they don't like happen and there simply aren't enough players who will call them on that selfish, dishonest behavior.
My personal approach to my consent is as follows: Ultimately, my consent trumps anything and everything, which means it is not something I revoke casually. If someone says they want to stab my character out of the blue, I'll allow it, with the understanding that the worst my character will get is a few days in hospital. If my character dies, it will be at a suitably dramatic moment, or because I've grown tired of playing them. PC/PC conflict will always be settled by a mechanical system where possible, simply because it is the fairest way of doing it, and I will not complain about either result - even if I go into it knowing I have a disadvantage.
Multi User Shared Hallucinations aren't, y'know, singular hallucinations. The whole thing falls apart when people forget that the text reality is made up of more than themselves.