I could also argue that the word "design" has a connotation strictly opposing emergent behaviour like evolution, as in the intelligent design "theory". So not the best word to use perhaps.
And in your example, just because we made a system that exhibits emergent behaviour to some degree, we can't assume it can "design" intelligence the way evolution did, on a much, much shorter timeline, no less.
It's even crazier that some people believe that humans "evolved" intelligence just by nature selecting the genes which were best at propagating.
Clearly, human intelligence is the product of a higher being designing it.
/s