The article says they are distributing drone operators among most infantry units like Ukraine is doing - it seems like not doing so now is a big mistake among modern military - though the movie Warfare fictionalizes a little bit, it had Navy SEAL units deploying at least observation drones with each unit in 2006, offensive and defensive drones would require a bit more specialized loadout and training plus spread out through entire army and marines is a big change - the long development times of US military equipment also muddies the waters.
edit: this article from two years ago illustrates what Ukraine was telling the public at least.
https://www.reuters.com/graphics/UKRAINE-CRISIS/DRONES/dwpke...