Been through the shortages several times. Mass hysteria. Herd mentality.
The two year backorder comes from dealers and distributors mass ordering from everybody in the hopes of getting anything. In addition ammo manufacturers ramping up production to their full capacity to make hay while the sun shines.
If and when things start to catch up, dealers will suddenly start cancelling all those orders to keep from getting stuck with large shipments and suddenly you will see the 2 year order backlog disappear.
BUY WHEN THERE IS PLENTY. Ammo, 22lr, primers, powder, lower receivers, parts kits. What will get hit on the next wave of regulations? No matter how good things are, a Democrat is going to get elected sooner or later. There will be another mass shooting or high level murder. Always going to be another excuse for trying to pass more regulation, creating another shortage or ban. They are not going away.