Yglesias is right to remind us all, for the 10 millionth time, that godless Europe mostly consists of states with explicit state religions or quasi-state religions. Some countries even handle the tithing for churches by collecting the "church tax" and distributing it to churches.
While church attendance is definitely higher in this country (claimed attendnace at least), it is not because of strict church-state separation in Europe. If anything it's the opposite.