Exactly, winning the culture war is the long term goal and is served by the short term gains provided by attacks like we witnessed in France. The unfortunate fact is most people dont even pay attention to this progression until a major attack happens, and even then they soon forget it in favor of their preferred distraction. There is no excuse, in an age where information is available at your finger tips, to be ignorant about what is occurring.The "refugee Trojan horse" as an insertion method for militants is a red herring. The issue has never been getting fighters into the target country. The 9/11 attackers came here legally.
Europe and America's" screwed up immigration systems have already resulted in large influxes and large populations of true believers hiding amongst regular folks. France in particular has entire sections of its country that have been turned into no-go zones for Frenchmen and French authorities....all predate the recent refugee crisis.
It can be be argued that the influx will serve a bigger purpose in terms of social reengineering though.