Around 100 years from now society has entered a multi planetary society, with mines in space bringing in resources to Earth in abundance.
Utilizing this new material wealth, Earth Nations start to, metaphorically, buy the Rolls-Royce cars of the new hip military tech: soldier drones.
These humanoid robots have basic, dumb AI, superhuman strength, and no empathy whatsoever in whatever they kill. They excel in physical and emotional stats compared to regular soldiers, but can be easily dispatched with smarts and lots of lead.
Thus, the current military now consists of the common Robo-grunt for large scale combat, and the Operators: special forces soldiers equipped with exo-armor and full control of said robo-grunts (including self-destruct, when they get hacked)
Would these units be considered effective if they were to exist in modern combat alongside regular soldiers? Will they offer an advantage over humans, or just become an expensive broken iPhone for the military to deal with? (soft science is intended for this answer, no need for extensive research. This is just whether or not there are some loopholes in this system.)