Have you payed attention how much power there was available and how much of it was used during the episode? I got lost last time going though this episode. At some point they ran out of power to replicate complicated elements in the replicator, at some point they were able to try the ”Borg weapon”. Life support was cut back to save energy for the buzzard collectors. Those might have not been the only ones. They did have an antimatter reactor, did the rift also drain that, what.... Maybe this is one of those episodes where thinking too much hurts the plot.