I'd only believe he's dead if they show us the body or if they have a DNA result from some samples of ground meat that was left after the airstrikes. If true, then rest in pieces.
What is your opinion about Omar Maute, is he really dead? The news said that there is a strong indication that he died in the warzone. What do you guys think will happen to the group of terrorist?, surely they will lose their morale, but do you think they will continue attacking the city of the philippines in marawi?
If you already saw the names of the dead terrorists, you'd know that they have foreign fighters with them, coming from countries like Yemen, Saudi Arabia, Malaysia, Indonesia and Russia (Chechnya). With ISIS losing ground in Iraq, it's not impossible that these would be coming to the Philippines instead. After all, they're fighting against infidels here.
The dream of establishing an Islamic caliphate in Southeast Asia actually predated the rise of ISIS so it's likely former ISIS fighters might focus their attention to this region instead. After all, fighters from this region fought in Iraq, they can just come home and try the same thing here.