From an author's perspective, it can be difficult to include indifferent/passive options since that's kinda... like admitting that your readers might not give a damn about your plot lol
If you go down that route, you pretty much have to make it so outside circumstances force the MC into it anyway, and then this reluctance is still something that should be reflected in the narrative.
I think that, if your story is more linear in terms of plot, it needs to be written in a way that makes it clear why the MC would want to go along. "But why?" is a very useful question to ask yourself as an author, in general. Ideally, the narrative should funnel the MC's and the reader's feelings into going along so that it doesn't feel forced even if it kinda is.
Either that, or you're stuck with Wayfarer-levels of branching, which is cool, but difficult to pull off.
...I think that AMR author might simply be eager to get the plot going, so MC's inner workings were left somewhat... neglected. But it's difficult for me to sit through all these introductions and loredumps when all I want is to see what the old crew is doing :')
These kinds of authors have to be projecting. That's multiple times ive seen RO's cheating, MC being a bum and the author's self insert character in IF's. No way its a coincidence. The unhinged ones are slowly showing themselves. Why not a harem story or something like WLGYL lmao, id pay for a good harem story. (I'm looking at you AC, make it happen.)
