Why modern convoys could still use escort carriers

Would a modern global war still create a use for escort carriers?

Yes; major convoys would benefit from extra helicopters and drones beyond what ordinary surface escorts can carry.

A modern escort carrier could supplement the aircraft carried by hangar-equipped frigates and destroyers. In the proposed global-war scenario, important convoys would still benefit from more helicopters and drones. The additional aviation capacity supplies the case for retaining an escort-carrier role. No particular hull or air-group size is proposed.