I mean culturally English like most Protestantism as we experience it in the USA (Lutherans and Michigan "Reformed" types aside).  But also like the Ordinariate, which is about as far from creeping Protestantism/evangelicalism as one can get.

Then again it was the English Protestant heresiarch Cranmer who first put the Ten Commandments into the Mass, originally in the form of a troped Kyrie.  The Ordinariates have it as part of their "Anglican patrimony" not from Sarum Rite times but from the beginnings of Protestantism.  

You're probably right, it is probably creeping Protestantism at work in the story, regardless of the cultural significance (strong enough for it to be retained by the Ordinariate) to those of certain ethnicity or heritage.