Muslim population: Five to six million (8-9.6%)
Higher than all the other western nations but that is because they are former citizens of Algeria, Morocco and Tunisia.
They have no proper levers of power they can cause problems but a takeover or even a civil war is not something they are really capable of.
No I am not having a bad day but thanks for asking.
What about in a few years? You know the birth rates for Muslims and non-Muslims in France and most of the EU, right?