When a court rules that a particular area is outside of elected officials' power to legislate, in a sense they are disenfranchising those who would vote for officials to make such laws. Leaving aside whether it is right or wrong, the underlying issue is that someone's set of values has been elevated outside of the democratic process. This has always been happening since the beginning, but in recent years we've experienced a significant lack of agreement over those values such that one side feels disenfranchised.
There are a million things in this country that don't follow the democratic process such as the electoral college. But is that what you're really arguing?
The fact that you disagree with that particular democratic process does not mean it is not in fact a democratic process. Not a perfect one, but one nonetheless. As for your second sentence, I don't understand what you are getting at. I am really arguing the argument I put forth, not some other argument. If you disagree with that point, happy to entertain a rebuttal but I have no interest in participating in a culture war so you can put down your dog whistle detector.
Only one group of people complains about secularism in America, and it's Christians. Notice that Hidus and Muslims in the US do not have a problem with the separation of church of state like Christians do.
I only dislike Christians trying to jam their God into law and make the US a theocracy like Afghanistan. Their hope is that people like you see any criticism as an attack on Christianity. They hope useful idiots do exactly what you are doing.