Any thoughts on this?
Surveys like this will never mean anything really. There are too many who attend some church for reasons that have nothing to do with being a follower of Christ. Family connections, tradition, social gathering, etc. Most simply identify with the “church” they attend whether part of a recognized denomination or not.
Maybe it means nothing more than that people are more willing to stop being hypocrites and playing church.
Church attendance, membership, affiliation, whatever, is no measure of the genuineness of someone’s profession of faith.
I know some denominations do cling to that paradigm, but I don’t see it that way.