This is a real conversation an aquaintance of mine had a few years ago.
English Mother to her Adult Daughter after daughter explained her passionate Christianity some: "I'm a Christian too you know."
Daughter: "But Mum, do you belive in the Virgin Birth and the Resurrection?"
Mother: "Don't be ridiculous dear, nobody believes in those fairy tales anymore."
Daughter: "If you don't believe in that, Mum, then how can you say you are a Christian?"
Mother (without the slightest insincerity or lack of conviction): "Well, of course I'm a Christian dear. I'm English."
Christianity as a social class rather than a religion.
The Achilles's heel of the ECUSA has always been its desire to be "with it," trendy, and of the times. A lot of us saw this coming as long ago as the late 60s (I would have seen it in the late 50s with Spong, but I wasn't old enough to appreciate what was going on until I was in high school.)