What do Trinitarians think is causing a serious decline in Trinity belief?

From George Barna Research the following statistics were submitted. Only 16% of those professing Trinity belief held valid views. This graph is drawn from two Christian surveys. The data from 2014-2022 is from thestateoftheology.com, and the 2025 survey is from George Barna at the Cultural Research Center. All surveys had a minimum of 2,100 participants. What is causing this dramatic decline? Source below. - [Most Americans—Including Most Christian Churchgoers— Reject the Trinity](https://georgebarna.com/2025/04/most-americans-including-most-christian-churchgoers/)