I've heard that the unspoken truth of those launch sites is they are just being maintained for lack of orders to dismantle and that even in event of a nuclear w

I've heard that the unspoken truth of those launch sites is they are just being maintained for lack of orders to dismantle and that even in event of a nuclear war, they couldn't/wouldn't be used safely. The majority of the US's strategic nuclear arsenal would be fired from one of our nuclear equipped submarines.