7th Umbral Calamity is not much of a calamity

[Anonymoose]

Yes, there was (probably) still a Rejoining. It's (seemingly) clear in the context of what people say about the Seventh.

Koji referred to it as Louisoix "half stopping" the Calamity, which I assume means he stopped the half that causes all of the destruction here on the Source (or at least undid and mitigated a great deal of it) and not the destruction of the other world.

The Ascians refer to Zodiark being empowered by the recent Ardor, so it's hard to assume one didn't take place.

Hydaelyn says that she's failed to prevent a Calamity seven times, so the one labeled the Seventh probably succeeded.