My question is what do we gain from showing them we can shoot them down? how much more detailed of info are they getting from these drones that they aren't getting from LEO satellites? Shooting them down just gives whatever opponents test data for getting past our defences when they potentially actually need to in the future when they're actively hostile.
Nothing. But if we can't jam and retrieve, shooting them down is a next best option.
That's the stuff you don't get from LEO satellites.
If they're here to try to assess our air defense network, then a reasonable response is don't turn it on. Don't turn on the best radars. Don't turn on the data links from the air combat control centers to the air force bases (or to the planes in the air).
Sure, they can see the vanilla stuff better than they can from a satellite. But if the good stuff is off, they don't find out much about it.
> don't turn it on
There is no need to? It was detected long ago and was followed both with radio and visually.
If these spy drones and balloons exist, then you can sure bet they're doing something of value. Militaries don't design and fly these things for the fun of it.
And why are you assuming it's only a problem if they're better than us at it? We could be spying on them even more effectively, but that's not a reason to not prevent them from doing the same to us.
For all we know, China may have decided that every Baptist church is a possible nuclear launch site and that they all need to be priority #1 for surveillance. Particularly on Wednesday nights when all the folks in the surrounding community come in early in the evening and sometimes don't leave until late at night.
You got it. There is no "aside". That is it.
Imagine you want to defeat a big powerful attack dog. You know the dog can only hurt you if it sees you. You send tiny mice towards the dog and you measure carefully how far they get before the dog kills them. If the dog is in the habit of killing every mice it sees then you can check exactly how well it can see, better than an eye-chart. And with that knowledge you can outmanoeuvre the dog.
If the dog chills out and only snaps at the mice which gets too brazen then the dog retained a strategic edge. Using this strategic edge during a real conflict the dog can surprise the attackers when the dog suddenly starts using their faculties to their fullest extent.
If these are surveillance drones trying to find weaknesses in our radar and comms then we should be destroying these things as quickly as possible.
If you do that, you destroy every surveillance drone you detect, then you just shipped your radar's specs to the enemy. Because you can not destroy drones you can not see. So every time the enemy's drone survives they know it is because it was small enough, or far enough, or stealthy enough to not be seen.
If you do that you might as well invite your adversary to the proving ground and currier them the design specifications.
You're now back to square one.
If you deploy this anti-drone measure anywhere else, your opponent now knows how to counter them wherever you deploy them until you find a new way to counter it.
This is exactly what US and Russia did in Cold War I. Probe, see responses, hope that they won't blow you up, develop counter responses. Repeat.
The opponent wants to spy and probe and test. Destroying those drones is exactly what we should want, and what your opponent doesn't want.
The only reason to allow these drones/balloons to operate freely is if we already have effective anti-drone measures that we're keeping secret, in order to goad an enemy into a false sense of security -- which the article also considers but then dismisses as unlikely.
But aside from that hypothesis, I fail to see why destroying invading military technology would be "exactly what your opponent wants".