Mass airborne drops were cutting edge in World War 2. There only use today is to scare small countries with little military capability. Being able to drop 20,000 troops inside a small countries borders can create havoc, but against the a larger country like China, Russia, or the US.....not so cutting edge. More like sending many highly motivated troops to there death.
It isn’t about dropping 20,000 troops just to wreak havoc or take a capitol, it is about capturing and destroying specific targets, getting in a spear head hours before the cavalry arrives, it is premature to remove Airborne capabilities from America’s capabilities.
It has been 10 years since the last mass Airborne combat jump for America, it has been a few months for the French since they dropped 250 Airborne in Mali.