I don’t think it’s been demonstrated that the report was incorrect. There is a Turkish psychologist named Ishael Ak, so this has been proposed as an alternative theory. I don’t find it persuasive myself. No connection to Ak has turned up thus far, and in any case why would a killer write the name of an academic psychiatrist on his arm before going out and shooting people?
But Ibrahmim and Ismail (Abraham and Ishmael) were the founding prophets of Islam, later leading to Mohammed. They used axes to destroy the pagan idols, and then built the Kabaa to replace them, according to Mo’s version of events.
I think it’s a stretch to attach any terrorist motives to this, in the absence of ANY information. There is only speculation, which some folks have taken to the extreme.