Sometimes we see so many trees in a forest, that we forget what we came for in the first place.The problem isn't whether it has/lacks APS or integrated drone counter measures specifically, the problem is more about everything else -- whether they have air superiority, scale of signature/concealment, extent of mobility, and the overall manner/stage in which they would be usable in a conflict with the PLA (i.e.: under what circumstances and stage of a conflict would the PLA conduct a landing to begin with).
Bluefor coastal screen just lost point A(say, hill), which establishes security of fresh redfor landing and compromises blue defense. It can't retake it by itself, and by the time it will be able to prepare an attack - redfor will reinforce the point A.
"You" are fresh roc reserve with orders to immediately retake it. Air superiority, scale of signature, extent of mobility and quantum physics are not your concern, you're probably going to die too soon.
The only way to retake such position swiftly (without deploying into battle order and doing things at infantry infiltration speeds) is armored counterattack. And here, you either have the means or you don't.
I don't think there's a need to bring in higher realms when we're talking about a rather basic tactical task.
Starting position A, target position B. Maneuver/Attack is necessary, otherwise the landing perimeter will be established and the whole defense will be compromised.
Attack may fail, sure, but without attack - the failure on a far larger scale is already here.
Because all the smart assymetry with javelins, stingers and drones won't give you that hill.