What is new? The Anglicans are protestants.
The Archbishop has ruined the argument against gay marriage by stating it was not a faith issue.
This is not a faith issue, although we are grateful for the attention that government and the other place have paid to issues of religious freedom – deeply grateful. But it is not, at heart, a faith issue; it is about the general social good.
Damian Thompson's comment is partially here.
But are we now to infer from the Archbishop's speech that there is no theological core to its opposition? I thought the Church of England opposed gay marriage because it believed that it was against God's plan for humanity. Now we discover that it is "not, at heart, a faith issue". And so a very significant gulf opens up between the Church of England and the Catholic Church, which – like it or not – most certainly does believes that this is fundamentally, even exclusively, "a faith issue"