All ATGMs in use currently operate by killing the crew not by disabling the machinery itself
Indeed... that is the logic of the unmanned turrets on their new vehicles, but unless it starts a fire or sets off ammunitions or kills crew then it isn't really effective.
Human shaped robots are interesting in this regard too... the natural thing when shooting at a human shape is to aim for the head, but when designing a robot there is no reason to place what is essentially the brain or power supply inside the head of the robot... it makes more sense to put that in the chest protected by armour.
In a human being the brain being in the head is necessary to process what you see and hear and taste and smell in a part of the body that can easily move and pivot to gather information without needing to move the whole body.
For a robot you could have multiple remote sensors that can be detached and launched to offer better views... without having the schematics of the design however you would have to riddle the robot with bullet holes to try to find a vulnerable place to damage or destroy it, and these robot vehicles could be the same...
Sending one of these robots will also force enemies to reveal their location which will expose them to fire from units behind the robots
In fact sensors on the robot vehicles would be more useful than weapons... as the enemy fires on the robot it can use audio and optical and radar sensors to determine the type of weapon and its location and plot out the positions the enemy are currently occupying... multiple vehicles sitting back at stand off distances can then engage with direct fire weapons like 125mm guns and 120mm mortars... or just 40mm grenade launchers and HMGs and light cannon...
Only way for infantry to deal with these robots would be with field artillery but those are not exactly man portable or easy to hide
Anti armour weapons will need to evolve and adapt to take out engines and tracks or wheels, but also anti optics weapons will need to be used as well as jamming control signals etc etc.
Or jamm the control of those robots. Or worse take controle of them and send them to fight you.
I suspect there will be an AI element involved in these robots so jammed control signals might just put it in a return mode to head back to friendly lines while transmitting the direction and range of the jammer... perhaps firing on the jammer itself could be part of the design.
I would suspect a force sophisticated enough to have such vehicles will also have the EW support to prevent hostile take over or manipulation of their own robots.
Iran took control of a US drone and landed it in an iranian airbase. With ground based drones it is even easier.
AFAIK that drone was damaged when it crashed so I rather suspect it was jammed and automatically landed rather than they took control of it as such.
Russian ground drones in Syria lost signal many times because of urban environment and they mainly had bad results with them and it was against an oponent with no sigint/elint/jamming equipment.
That was issues with signal direction/line of sight issues, and signal strength... those systems were designed to be telecontrolled rather than to operate autonomously on their own in a hostile environment. Most were designed for perimeter control at a military base rather than roaming into enemy held territory and looking for targets.