There has been no explanation of how this happened. If it were me, I would have been the first person to stand up and admit the error. I have not seen that happen.
Maybe I missed it. But, this is now a black mark upon the whole topic as far as I am concerned. I believe that this division that were are seeing in our Church, and our country is of the Devil. Sometimes we get so entrenched in our own view, that we fail to even consider something different.
No growth comes from attitudes like this, from any side. Life is not black & white, either/or; it is shades of grey and both/and.
Pope Francis has changed zero doctrine/dogma. He is not spreading heresies. He is just asking that we look at things with the same mercy that Jesus did, and not be bound by laws made for men.