I like how they touched on the reverse butterfly effect. It's weird. They put into speech exact thoughts I've had on the subject.
Meteors, Natural Disasters, Apocalypses. These are all gigantic events that counter act the butterfly effect to some degree. Because certain events are unavoidable then there would be an averaging effect on time over the course of history if one were to try to alter history.
I used to play this game called card game called Chrononauts, and there was a Back to the Future variant. In the game you play as different characters whose goal is to make history play out a certain way to ensure your existence. So, to make sure that you were born you had to make sure that certain "linchpin events" happened. An example of this in the BTTF version is Marty McFly, Marty McFly has to make sure that Lorraine Baines and George McFly kiss and the dance or he was just going to disappear. In the regular version of the game you have to make sure the crash of the Hindenberg happens or the sinking of the SS Lusitania.
https://www.looneylabs.com/games/chrononautsI like how the series is setting about to destroy the Marvel Canon which at this point has been sacrosanct. I'm ready for the Marvel Apocrypha. Continuity has been too much of a problem. How do we get the X-men into the Marvel Universe? Simple, they exist in an alternate reality and the realities just need to be merged.
If I were to guess where the end of the series ultimately ends: The time keepers are just Loki. As In Me, Myself, and I.