I'll offer a bit of a different point of view on what we're seeing.
The drone footage of Azeri kills of Armenian vehicles
here indicates the "amateur" nature of the players in this conflict - at least with one side. Sure most of the platforms are "dug in" with some earthen berms, but they are in the wide open with no overhead concealment or protection. Watching 6 minutes of footage reveals a very low level of sophistication in defensive preparation. The "tank plinking" hearkens back to the U.S. picking off Iraqi Divisions one AFV at a time in 1991. In fact, a good dive into the history books reveals that this has been a constant of modern warfare since its inception in the First World War. By 1917, anything that wasn't dug in and
concealed from the air would be picked up by aerial observation and destroyed by fires (in this case, artillery barrages).
To me, this means that UAVs/UAS/RPS (whatever we want to go with) are not a revolutionary game changer, nor do they "scare the crap out of me." They are simply the next step in the evolution of the reconnaissance bi-plane and its tactical role, and offer no more or no less than was offered in 1917. And just like effective countermeasures are designed for the bi-plane, effective countermeasures for UAVs will undoubtedly ensure that offensive/defensive balance is achieved.
It goes to show - you can have a small defence budget and spend it on some neat Russian equipment, but if you don't know how to use it very well, it all ends up as scrap steel. Materiel is relatively easy to procure and replace - professional warfighters are not.