Looks like Right-Wing Nuts are turning people off to religion.
Many drop religious affiliation due to un-Christian "values" of the far right.
https://www.theguard...olitics-decline
a reason for the decline among those groups is political – an “allergic reaction to the religious right”.
“Many Americans – especially young people – see religion as bound up with political conservatism, and the Republican party specifically,” Campbell said.