Europe hasn't politically recovered from the last few refugee crises, nor have national collectives been able to properly integrate or adjust to the fact they're there, it's been ran as a pressure point, and adding even more pressure will certainly enable those politicians to hit this button with greater effect.
I don't fucking understand why no European leader is looking at what Israel is doing with realpolitik and go "why the fuck are you creating another migrant crisis", unless that is exactly what they want, to get power for themselves. Urgh.