Like the last group of missiles found in Iraq, these will prove to be from the 1980's and as such, useless.
If they were intact and operable, we'd have known about it almost immediately.
I wouldn't rush to judgment. Hoekstra is chairman of the House intelligence committtee. For him to associate himself with this information makes it significant to me. As some have posited on this thread, keeping the information secret may have been intentional fearing that the enemy would either find them or use them.
If the WMD are in artillery shells, that would make them operable assuming the agent hasn't degraded significantly. We also found yellow cake in Iraq and sent it back to the US.