America certainly cannot exist without the cultural foundation,
but “America” is just the result of that culture,
and destroying America is just the surface target.
They are attempting to destroy the foundation of that target - God.
You are so right. As an agnostic conservative, I meet liberals in cyber space all the time that are obsessed with religion. When I try to express that not all conservatives are religious, they can't get past it. Every debate turns back to the religious right.
It also helps explain why they believe the freedom to engage in vice is the only freedom that counts. When really, it isn't religion that will prevent them from doing such but more the simple laws of nature.
Another thought, don't they know wiping out religion has been tried and tried again???