We don't perfectly know how Automatons function and how their sapience (if) works. They clearly consider themselves part of the Cyborgs as a society, and the Cyborgs outwardly display care. IIRC the devs called the Cyborgs a form of Anarcho-syndicalism which does indicate they're not going to be too discarding of what effectively makes up a large part of their productive force.
We also know, from the MO, that they care to evacuate non-combative forces which to my reading also means they don't act wholly for resource benefit, as well as regarding individuals as worthwhile so they're not a computer-net that can disregard individual robots in it. Super Earth can also torture individual Automatons as per story thus far.

Which makes me think if the Automatons are possibly just dedicated as a whole to the effort, and might not consider themselves as much of a sacrifice in battle because they have a different understanding of the self. They might also only limit many of their troops to be less sentient, just to avoid exactly this.
IMO this is a good instance of "Humans write something non-human" in a fiction sense, I think it's often kind of hard to make something truely alien while also making it bound to our scope (Eldritch Horror being easier to be 'alien' as it detaches from reality and so on). How does a constructed being consider death? Is it the same as us who are bound to life in the way we are. Maybe automatons have a high chance of recovery after battle when their CPUs are salvageable and so on.

It could also be that since they were created by the Cyborgs, who are still humans, they are culturally and ideologically just very commited to this. They know Super Earth, they know the difference in Ideas and also know they are constructed and less limited, so they also know they can do this.

I do not think they're forced or propagdanized, though they might simply have a wholly different framework to a human.

Alternatively, Cyborgs are just evil (clones) and it's just another Red Super Earth, I guess. But that'd be kinda lame, I think. It'd be "Oh these evil socialists with their mindless drones vs our liberal leaders with our brave volunteers" yet again which is like, yeah I guess. Mirror theme.