Divorced?The Church of England refused me a marriage because my wife and I were divorced. The Roman Catholic church would marry us because it didn't regard us as ever having been married, since we had each been married in protestant churches before; only snag was I would have to convert to Catholicism!
Given that standard of 'logic', I'm not surprised at the Churches making a fuss over something which doesn't directly affect them viz. what formal word we use for civil partnership ! If most people call it 'marriage' regardless of the legal term, which in due course they will, for convenience and ease,the Churches will have to get angry at dictionary compilers who import that usage into works.
The churches are not under compulsion to marry anyone. What they call the procedure is for them but to condemn the usage of marriage for something which in law is identical to marriage in everything but the legal name is just silly. If they objected to the fact of 'civil partnership', that, at least, would have something more weighty as an argument, but they lost any battle there. They may call their service 'holy marriage', if they wish; a natural process in language exemplified by 'acoustic guitar' for 'guitar'.!