I think that society often confuses the Church of England and Christianity.
Christianity is simply a movement of those who follow Jesus Christ - Son of God - there are core beliefs which haven't changed for 2,000+ years. It is based on a personal relationship with God - made possible by the death of Christ on the cross. That core relationship and beliefs are not particularly complex and the Bible outlines the way to live.
The Church of England (CofE) is a human made up institution which is mainly good but has bad bits as well - The C of E doesn't define Christianity - it is a framework within which people worship God. It is a very helpful framework, but it doesn't define Christianity...
It is therefore good to see that the C of E is making a statement that is in accordance with Holy scripture - that is not to take a backward step - but to positively affirm its core purpose of supporting and promoting the Bible and how God says to live.
The Bible doesn't set out to be all things to all people - but to show the right way to live - will that upset some and offend some - yes, because we live in a self-centred world where people are rapid to take offence - in a me, me, me culture where if our every whim isn't met then we cry foul. So, the C of E should not be setting out to 'move with the times' / to 'fit in with current culture' - in fact the very opposite is true, it is counter-cultural - Christians are called to be in the world, but not of the world. To do anything else would be to devalue everything it stands for and make it pointless...
Yes, there are those who see the C of E and the Bible as pointless and not relevant to them - that is the great thing about choice, they have that choice - however the flip-side of choice, is that others choose differently.
Despite a message that is increasingly promoted - the Bible is not anti-homosexuals, it is not anti any set of people - it is pro and anti various activities... Therefore the fact that someone considers themselves to be homosexual is not against the teaching of the bible - the homosexual act though is. This is why celibate homosexuals are not prohibited where active homosexuals are.