Souplex said:
I think it's less about what's a strategically sound target, and more what's a hated target. France is currently one of the more Islamaphobic countries and does things like try and ban head-scarves which breeds animosity. They're also seen as the most decadent/sinful of Europe by outsiders. They're the biggest world power among Mediterranean nations.
I think it's not fair to claim things like islamophobia when even cartoonists of charlie hepdo are killed for lampooning cartoons, something they did to all religions.
Also, they don't have a ban on headscarves, they have a ban on complete facial coverings, such as balaclava, niqab and burqa. You can still wear the hijab (although some people want to ban the hijab in universities).
This makes sense too, because previously terror suspects have gone into mosques as men and then left dressed as a woman in a burqa.