Board Thread:Manga/@comment-27321453-20190908104148/@comment-37493549-20190924103519

Neetaku wrote: There are definitely other things he needs to do in order to bring about the Rumbling, so he won't just sit around and wait for it. My point is only that he theoretically could do nothing, as the Rumbling is destined to happen regardless of (or I guess technically because of) whatever actions he himself takes. There is no 'theoretically' because doing nothing is something Eren never had any motivation to do. The rumbling is only 'destined' to happen because Eren (and everyone else) already chose the actions that cause it to happen. If he was inclined to choose another action, then the rumbling would not be involved in the future he saw in the first place.

This is the blind spot you seem to have. If 'theoretically' Eren was inclined to perform actions that don't lead to the rumbling, then a 'no rumbling' future is the one he would see in the first place.