I see where you're coming from but I'm guessing probably not if it doesn't affect the world's aether in umbra/astral cycles etc the way calamities did.

Also just for the sake of not confusing PLAYERS I doubt the writers are going to have npcs call it the 8th calamity. Kind of like how in WoW the 'first second and third wars' refer to WC 1-3 even though that naming convention mostly makes sense more for players to know 'oh it's talking about that game' rather than making all that much sense in and of themselves.

We really won't know for sure itnil 6.0 hits, but I doubt they're going to write that into the story.