[TrapLord_Rhodo]

but you are missing context here. His point was that once cheap $500 drones can be produced at an industrial scale, in a highly automated fashion you can completely overwhelm any defensive measure that could be put in place.

Normal warefare is based on "Manpower" and you reference "Army". He further goes on to explain that artilery, tanks and any kind of "land army" is completely obsolete.

[CRConrad]

The word "explain" works a bit like "know" (and perhaps "teach", I think). No, you don't "know" that the Earth is flat; you just mistakenly think so. (And no, you don't "teach" kids that the Earth is flat; you just mislead them.)

To say that Schmidt "explained" that artillery, tanks and armies are obsolete implies that that is true, which... At the very least, remains to be seen. The correct term would be something like "He further goes on to bloviate about how artillery, tanks and..."