When it is styled as a private thing, like one’s choice of vanilla or chocolate ice cream with no further overtones, that makes a lie out of it. That would be the problem here.
The Founding Fathers emphasized private morality. Especially for those who were to govern. Washington described such, along with religion, as “indispensable supports”.
The left knows who its enemy is; it’s right in the preamble to the Communist Manifesto.