Most arsonists don’t want to get caught. Most don’t want to kill people. They want to watch a fire, not screaming people.
This was not arson because dropping it into a crowded food court does not fit. The only thing flammable down there would be the chairs and the people. He had three firebombs and was too stupid to build them properly. I assume after the first one didn’t have the desired effect, he abandoned the other two and ran to the closest mosque, Arlington has a few.
The guy’s facebook page (if it’s real) is a hoot...