Maybe so, but “God is dead” was a popular slogan in liberal Protestant circles circa 1965 or thereabouts. And not much since.
I remember looking into that a long time ago. There were some liberals who claimed that by saying 'God is Dead' they weren't quite saying that. It had something to do with evolutionary theology where Gold supposedly evolves over time. Supposedly it was our old vision of God that was dead and was being supplanted by the newer, better, shinier god the liberals had to offer us.
Basically a bunch of whacked-out nonsense.