It can call strikes on its own positions if situation requires it to, I did not say it has to, why could it not also have a laser designator.
If it is rendered immobile but not completely destroyed, and it sees a target of opportunity near by, why can it not sacrifice itself?
Can drone hold a position with more staying power than ground assets? Can it enter buildings to search? Does artillery support have to be heavy pieces or can it can also be mortars?
Robot dogs are like infantryman. It carries a gun, but shooting is not all that it does. Why do we still have people doing recon missions? Wouldn't a robot dog be more useful in dense jungles than a drone?
I would ask you to consider which is better: laser designator from above the target, or on the ground. The ground may and will have all sorts of obstructions guaranteed to be in the way, preventing the laser from illuminating anywhere near the target. On the other hand, a laser from the air may not always be able to illuminate the target itself, but it will be able to illuminate the structure atop the target, allowing artillery shells to still strike the target effectively.
Don't kid yourself regarding the abilities of robot dogs to effectively hold a position against an enemy attack. Or the ability of a robot dog to effectively search a building. As far as wartime use goes, a drone may in fact be better: we have seen that the PLA trains with AR-goggles and drones, and I know for a fact that such drones can navigate through broken windows and the complex internal structure of buildings effectively.
A robot dog may be about as useless as a drone in the dense jungle. You might never have been into the dense jungle, but there's never the nice path in movies where everything else is super-dense foliage. Everything is just super-dense foliage. A pain enough for humans to walk through, even worse for robot dogs.
In any case, we've seen in the pictures posted that the PLA is using an airborne drone, either to spot or illuminate targets. It is a bit pointless to suggest robot dogs as an alternative for this purpose when the limitations of robot dogs are so clear.