The transition from cult to state church must have been tremendously affirming for some, but probably accepted with resignation by as many, for some time.
A charming church of scotland minister in fife told my athiest brother it was no barrier to a successful career in the church, one should not allow a trivial obsession with the 39 articles to stand in the way. He specialised in computer aided stylometry of amongst other writing, the Pauline epistles.
From the little that I know of Quakerism, I would think that at least some level of deism would be necessary, but who knows.
Graham Greene had a short story, “The Last Word,” (the title story of his final story collection) which posited a world in which atheism had become nearly universal and the military dictator summoned the last believer, the Pope who had become senile with age to assassinate him. After shooting him, he began to have doubts about his atheism and faith continued.