The support for cultural artifacts is based on cultural value, not church attendance. The grants are apparently in the framework of EU structural funds. The structural funds are allocated on the basis of regions, and the difference between the EU average and the regions' average GDP. It is true that would Turkey join, it would get a rather large share of structural funds, while a number of regions in other countries would move above the thrershold of applicability for EU grants. This happened during the last EU accession too.

_{*Lunatic*, n.
One whose delusions are out of fashion.}