Only because the Armenians lacked the means to fully counter them. In any future war; against an opponent which deploys airpower and has a layered and networked AD system; one would not be able to deploy UASs effectively.If look at azerbaijian Armenian war, the difference maker, were the drones and missiles.
more sense to put an aerial drone on on the mobile unarmored artillery.
Yes it would. Conceptual studies are also being done on attaching a micro UAS to MBTs and IFVs.