Do not get excited. The Baghdadi guy may have been killed, but these guys have people that will quickly fall into his place.
Killing, ahem, Bin Laden did not stop what is going on now.
Whack-a-Mole
All you say is true. Killing a leader won’t stop terrorism. Defeating a democrat won’t stop liberalism. Just because it doesn’t stop it completely is no reason to NOT be excited when a enemy leader is killed. I say rejoice.