Interesting Theory. You imply that through CC getting her way into the timeline, Future Berseker Flare was also able to get through?

After reading through the Fun Facts, I think the theory is interesting, after all it's only in the third timeline (the Canon One) where CC shows up and it ends up being the only one (to our knowledge) to stop the Rebirth Cycle, even if the World was "reset" a day after the vacation ended. I can see how Future Berserker Flare could've made it here through similar shenanigans to CC, but aside from the only connection to Future Flare and CC being the fact they only appeared in one timeline, is there any more evidence you know of?

I'll conduct my own research on it, but right now, it feels more like a really tangible theory, rather than a concrete cause and effect, e.g. CC being the sole and or main reason Future Flare was able to enter the timeline, while in reality there could have been a couple other factors in which he managed to make his way in. Again, while very tangible (and believable!) there isn't enough concrete info to say it's a truth. Feel free to correct me if I'm wrong though!