That can happen because there is nothing that came after that strike, so that that could be happening at any time. Taniks was from long before Siva, he has no relation to the devils and there was no Siva on the moon. The strike is only being made to stretch content. Same with nexus mind, echo chamber has already been created, there is a restorative mind, that means the nexus mind has to be destroyed. Echo chamber was released with taken so there could never be a taken nexus mind. I know it's super nitpicky, but for a game that's supposed to have this super intricate story outside of the game; the actual games story should hold up