I mean the far cry writer manage to keep the option in their iteration of walking away, so the standard should not be that high.
I've just been looking at spoilers for Phantom Liberty. Funnily enough, it looks like it actually does something similar to Far Cry 4, where you can intentionally finish the story right at the beginning. In the opening mission, you can sit back, let the President of the NUSA die instead of rushing to save her, and the story ends then and there with the implication that it was probably for the best that you didn't get involved.
I've just been looking at spoilers for Phantom Liberty. Funnily enough, it looks like it actually does something similar to Far Cry 4, where you can intentionally finish the story right at the beginning. In the opening mission, you can sit back, let the President of the NUSA die instead of rushing to save her, and the story ends then and there with the implication that it was probably for the best that you didn't get involved.