“... did not target the person who fired him or others who he perceived wronged him, he did not take hostages, the attack was not mission oriented and most significantly he did not use multiple firearms. Workplace homicides typically involve active shooters with an abundance of weapons (semiautomatic assault weapons), ammunition and other gear to support a sustained attack.” [snip]
The victimology, crime scene, weapons, trauma and offender characteristics of the Oklahoma homicide technically do not neatly fit into either workplace violence or lone wolf terrorism categories.
Sometimes people over think things. Recent convert or not he was a Muslim. Born American or not he was killing in the name of Islam. A forensic science geek may want to unravel every thread, stick each of them on a board with a straight pin and label each one in Latin and Greek but to the rest of us that doesn't matter at all. When someone is yelling Aloha Snackbar and has fire in his eyes they need to be put down with extreme prejudice.