It is a generational issue. The older generation - which also is the one that is most easily influenced by the church due to pearly-gate anxiety syndrome - is quite scared of further modernization and obviously the church is scared shitless of losing its power base.

This sort of thing changes one funeral at the time. Fortunately younger people in Poland tend to be considerably smarter about such things than their parents ever were, though there are of course also still people in that generation that are dominated by the church.