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He’s not. He’s a puppet, as is every other character in the MCU up to this point.
he doesn't make people do things. he sets up probabilities to make some events more likely.
if no one ate a crocodile in any of the timelines he would not be able to make someone chose to eat one.
the timeline is happening all of the time (or is accessible and mutable all of the time). the first round actions in a timeline are free or the result of non-direct free acts (or as "free" as actions get).
looking backwards (4th dimensionally at a timeline) he would know the timelines in which a certain action took place.