The man's a mystery. Just what could have motivated him is still sending our best and brightest to the cubicles, trying to figure out why he did what he did. I haven't been able to find the full and complete transcript yet. So far, I've heard two things that, if true, would be interesting. First, I've heard that his references to Allah were still changed to 'God'. On one level, that might not mean a thing. But on another, it could mean quite a bit.
The second is that at no point in all of his calling did he reference gays, the gay community, homosexuality, or anything else. What he seemed to reference was his devotion to Islam, ISIS, and shooting in retaliation for America's actions in Iraq and Syria. If true, that would be interesting because, with what little I've been able to piece together since so much of our time is spent trying to avoid linking Islamic terrorists with Islam, there seems to be a trend.
At least a few of the more notorious attacks by individuals who were coincidentally Muslim involved areas and communities with which they were known, if not well known. The Fort Hood shooter, the San Bernardino terrorists, the man who beheaded a coworker, and apparently this. If the stories hold true, it seems that he frequented this bar for some years, and was known by others to be a semi-regular. If that holds up, then it keeps with other cases, where the attackers didn't just go to some random location, but actually targeted places where they were known, and even liked.
We could look into that in more detail of course. But right now, the Left is trying desperately to maintain the anti-Christian West narrative, so looking at little things like what could prevent future attacks has to take a back seat.