Has anyone here mentioned a specific religion?
It is really surprising that, in the circumstances we face, attacks like this are initially assumed to be the result of religious nutters? We make assumptions on things based on our experience every day of our lives and there's nothing wrong with that as long as, having done so, we accept the FACTS when they're known and don't misrepresent them.
If it turns out this guy was just a drunk or psychopath with no such agenda it'll be an example of some initial assumptions being wrong but statistically, given proven experience across Europe, it's very likely that this is another example of the same thing sadly.