You're a smart guy, Peter Pedant: can you help the German police out here with his possible "motivation"? Could be a mental issue, of course. What do you reckon?
"no dead well actually one dead
..... this has to be AB"
I read this as "none dead would be best". If the axe-man could have been restrained before anyone got injured or killed then dealt with pending investigation, but most of AB is revenge/punishment hungry.
Sure to be more 'nothing to do with Islam', VE. German authorities, and AB's defenders of the faith, will be scratching around for the alternative 'reason' all morning.
V_E, could 'cultural shock' have tipped him over the edge? A young man, though in reality scarcely more than a boy, traumatised by the horrors he'd witnessed in his homeland, finding himself adrift in an alien world.