Do we actually know what happened in CF ending?

I mean, the game itself only has about a minute-long cinematic with some of the characters. There are no mainline Blazblue games after that (and since Mori left and so much time passed already there may never be). The community seems to overwhelmingly favor the theory that Ragna just restore everything and made everyone forget about him, but otherwise what happened in CF did happen. Arakune is dead, Nine is dead, Hakumen's suit is floating in Boundary, Jin's body is still a construct by Trinity that is breaking down, etc.

I was quite surprised when I first learned about this, as my take on this is completely different. I thought Ragna retroactively removed himself from existence of Blazblue world, so that he never existed there in the first place. Jin and Saya didn't just forget about him - they never had an older brother in the first place. Jin got Yukianesa for his martial prowess from NOL higher-ups, not from some psycho. Noel was never Jin's secretary, the events of the games (starting with Calamity Trigger) either didn't happen or happened under different circumstances. People didn't just forget - they never experienced world with Ragna in the first place (aside from Relius, Roy, Kokonoe with her backups and others who can use Boundary, which is not subject to interferences). In short - it is a true alternative world, not just a world in which everything happened, but Ragna just got the world to forget about himself.

I know we may never have the answer, but were there any canonical works (novels, manga) or interviews from Mori or other team members which explained what happened in CF ending? Or is my version of the events as good as the common one?