This guy was born in france and his parents immigrated...so "current" immigration system is far fetched

but i will bite.
Please tell me what is your solution?
This guy, and others like him, disprove the myth that all immigrants integrate over time. Yet, you have people, including you, who want the existing immigration system to continue, as is. You have people, including you, claiming that the culture and religion of immigrants don't matter.
If Europe needs immigrants so badly, get them from countries whose culture does not pose a threat to Europeans. There are plenty of immigrants who integrate perfectly well, while practicing and sharing their culture of origin, peacefully.
As for the immigrants who are already in Europe, if they have another citizenship, send them back home. If they are born in the country, and are fiché S like this guy, don't let them roam free among unsuspecting people. Find all the sources of islamist indoctrination, and shut them down. If mosques have to be shut down, do it. If they call you a racist, let them. Tell them to go live in an islamist country if they're not happy.
The solutions are many.