Misuse? By who's definition? Your's? MootReader's? Ok.
In the scientific community, the description of a symbiotic relation between man and machine, or other innate objects, has become a frequently used phrase, or lexicon, in scientific articles.
Words in the English language often morph beyond their original, or root meaning. The first time I saw it's use, outside of biological organisims, was in the 1960 paper by Licklidder (sp) entitled: The man-computer symbiosis.
Sorry, but not wrong here. Try thinking out of the box.
As an aside - might guns, one day, become "smart"?