I don't think anyone believed Israel would have the audacity to kill the military leadership of a full sovereign country. This is not like killing nasarallah. Israel has never gone after the leadership of another country openly.I don't think it's about morale or cohesion. I think it's about being smart and making the correct decisions especially when the pressure is high.
This is an open challenge against common international norms where countries don't try assassinate leadership even during times of war. Cause that will expose them to retaliation as well.
So targeting the leadership was a surprise. Using drones from inside ( ala ukraine) is also something new.
Other than that, nothing Israel has done so far is impressive. Attacking Iran with standoff missiles is well within expectations.
If Iran has morale and cohesion, they can also assassinate Israeli leadership later when they are no longer in hiding. Assassination of random military leaders is not that difficult.
What Iran needs to do now is regroup, slowly bring out hidden missiles out of bunkers that I am sure they have and then launch their own counter strike. Let's see if they can do that.