From your link: But others were more cautious, saying the attackers did not appear to have completed a thorough reconnaissance of their target or gathered much intelligence about it. Instructors from al-Qaida have long told volunteers to prioritise both. According to witnesses, the three men initially went to the wrong address before finding the proper one, only gaining access by chance and going up the wrong staircase. They also had to ask the whereabouts of targets.
I'm not wedded to the idea that they were crap, but these were no Jason Bournes. The media's go-to security analysts, of course, earn their living and their status by being prepared to speculate about Al Quaeda or ISIL's terrifying capabilities and immediate plans for carnage. So they'd be likely to look out for signs of competence, rather than the reverse.