You think Loki will destroy the Adam tree ? Or the heaven part of elbaf ?
I think the possible destruction of Adam will be the (usual) end of the arc countdown, as the birdcage was in DR, as BM and the cake was in WC, as Onigashima falling onto the Flower capital was Wano's etc.
Oda uses this trope every time.
This time we know Loki wants to "destroy the world" and he believes he is the (destroyer) Nika, so the stake is going to be Adam burning down, and with that Erbaf's downfall.