This article is base pandering at best. Even as someone such as myself who has quite strong pro gun control views can make the intellectual distinction between a well designed weapon vs the morality of creating one. Viewed from the lens of weaponry, the AK-47 usually is well regarded.
This is no different than how One can appreciate a well engineered computer malware attack in the same regard. Even things that are destructive can be enhanced by the rigors of design.