Many thanks!

The activities rated highest in all four countries were funerals, baptisms and weddings.

Sounds like the state churches should look for a way to inject themselves into graduation ceremonies... Tricky balancing act, keeping them banal and toothless, but not fading into oblivion...

Interestingly, the article also concludes that simply having a state church isn't enough, if the population is too heterogeneous

Ouch! So innoculation via state religion has the same heterogeneity problem that personalized medicine has...