It could be pure coincidence; it could be lots of Jihadi's having the same types of failures; but the timing sure makes it seem as if someone in ISIS was debriefed about how and why there was a low body count at the CrossRoads Mall attack. An alternative explanation might be that the ISIS English magazine is actually not created by ISIS, but rather is a dis info source targeted at ISIS followers.
Lets just hope that such knifing attacks don't become a regular shopping hazard, as they were for a while in Israel. The USA wouldn't quite know how to handle such a terror campaign in a politically correct manner, and as such it could be quite successful for them.
Given that the Crossroads mall terrorist actually advanced backwards into gunfire so that he would be shot in the back, it would appear that some politically correct force multiplication training was given to him. As claims of police shooting people in the back have resulted in Black Lives Matter type disturbances and often draw in the likes of Al Sharpton, we could be seeing the start of terrorists trying to tap into the politically correct racial/police discord that currently exists in the USA.