This runs into the same plot problem Interstellar does, in that a being that can consciously exist beyond "arrow of time" linearity had to develop to that state, and if it could only have developed to that state on assumption that it would essentially evolve beyond linearity and double back and save itself, how did it do so the first time around? Imagine crossing a river on a boat you found, then recognizing that you have to travel back and put the boat there. Why is that necessary? You've already crossed the river. This is a weird sort of jump a lot of time-travel movies do, and while I used to appreciate how it hints at our own brains' inability to really process fourth-dimensional thinking (since the more you think about a bootstrap, the more you realize how dependent your brain is on linear consequential thinking), more and more I find it to be self-impressed plot convolution. The film would've been better without that element.