It would have made sense too!
The only reason they wanted to stop Will was because of that.
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Becca: Japanese won't stop till they create the ultimate sex machine
Sara: We have to stop them
It's revealed in the movie that the AI thinks it is helping mankind because of the influence of his wife. The workers were sick people it called and fixed and enhanced.
shareI think if he'd created robots instead of enhancing people their motivation to stop him creating his own super-army would not have been any less.
...then whoa, differences...