Uh, Islam requires all its adherents to adopt prescribed "Moslem names" ~ these guys want to be Moslems, let them do it "back home" eh!
In some societies (France is one such) this naming business is really serious and no exceptions are tolerated. Seems to me the demands of Islam and France are incompatible.
Fine for the French, I just don't want a government or anyone else telling me what names I can give my kid. Something old fashioned called freedom. Won't last long.