It is to do with the fear of Catholicism, anti Catholic fear and loathing is deeply ingrained in many
Yes, that's true. Growing up as a Roman Catholic in England I always felt slightly cautious, part of a minority against whom violence could break out unexpectedly. Until very recently a Catholic was still prohibited from high political office in England. One learned to,well, not hide, but not to announce one's Catholicism. And (until 1989) our churches were empty save for the old, there were no new vocations, and the church seemed as though it had come to an end here.
So when I attend mass in Poland in packed churches, with pews full of all ages, I should feel encouraged. But it merely raises a thousand more questions about the relationships between a man, the Church and the State.
I don't believe in this data
The author quotes Borowik and Doktór, 23. Borowik, Irena and Tadeusz Doktór, Pluralizm religijny i moralny w Polsce: raport z badań. Kraków: Nomos, 2001
I thought that secularism means something else
England has a State religion but is secular. Poland has no State religion but is less secular than England. Go figure.