Oh god I predicted this being a thing two years ago, it's like I am staring at my own schizo ramblings taken form.
This war, man...

Next on my schizo ideas list anti-drone and cruise missile drone swarm of truck-launched drones.
Two are the brains - flying radars that send signals to the killers. They do not ram themselves or intercept drones in any way, shape or form, only provide the targets like a pair of target acquisition and engagement radars flying a few hundred meters up, and tuned for low-flying objects rather than distant contacts - flying radars on gliders with low detection range compared to their big brothers. Possible to be hover ones with a long cable from the ground for power and downlink.
The data is sent to two kinds of drones:
[1] cheap signal-guided drones that have a small explosive charge. They are not the fastest and are meant to stand in front of the incoming threat like an exoatmospheric interceptor would. Shaheds, cruise missiles etc. don't have TCAS so it's a pure matter of detection and interception.
[2] more expensive hunter-killers. Very high speed sent towards the threats with the goal of intercepting for a chase instead of ramming, with several single-shot barrels on them - chase up close and shoot.

If [2] fail to intercept, [1] are there to finish the job. The expensive types never ram themselves and only use stuff like explosive rounds to engage the targets, and the cheaper [1] type is only used to make an intercept if the hunter-killer drones fail to do so.

All drones are autonomous like radar-guided AA missiles and receive guidance only from the radar drones. Each drone has RTB functionality like the medical drones in Africa that are launched, deliver meds, and then get caught in a huge net.

High up-front cost, but very low upkeep and reusable with little to no additional cost in an ideal situation, as the explosive drones are nothing special, they just stand where they are told and act as a last line of defense.