I think what you're asking is despite the DNC getting caught sabotaging their best candidate in 2016 and helping fascism rise into power by ignoring who their own people wanted, why Christan nationalism is actually a thing. The answer is because when psychology was being studied the doctors ignored a major mental illness because most of the doctor's at the time also had the mental illness, and the ones that didn't but wrote about it would be declared to have a mental illness because of the mental illness the other doctors had. And now we have a brunch of doctors too worried about being politically correct to label the belief and talking to things that aren't there as a mental illness, and to call the church that does conversion therapy a cult.