Yes, but the dilithium crystal (which, in that future, are rare) was then inert and in the middle of a matter-antimatter collision. That's not healthy. You don't walk away from that. You do, in fact, blow up if the matter-antimatter streams intersect in the middle of you. It wasn't like all the ships went boom, and you could go back and salvage the dilithium once it reactivates (if it reactivates). That stuff is gone. Destroyed. Dilithium wwasscarce - let us assume that ships were getting by on low replacement supply and a lot of recrystallazation. So, like, 90% of the extant supply goes boom, because it is already in ships and other large power systems. You now have 10% of the supply remaining.Can you afford to do that again? Take out 90% of what still remains (which is in what ships remain), leaving yourself with 1% of what once was, just to get Discovery?