Going to jail is probably better if suicide was inevitable, but if it's inevitable, a person probably wouldn't be calling the hotline.
I think if the hotline was anonymous and untraceable and directly connected a person to a therapist who specialized in that sort of thing with no strings attached, it would be an invaluable tool. Unfortunately it is not that. It certainly could be.
This is 1000% missing the point. They've already decided that being dead is better than being alive with their current life situation. And you're saying they should voluntarily make their lives worse?
Can you imagine: You're at rock bottom, thinking about taking your life. Then someone comes along and says "Hey what if you don't and we lock you up and take your kids. Want to live now?"
Do you see how ridiculous that sounds?
Not every contrarian take makes sense even if it blows your mind on the first reading.
Do you think that people deserve to know that they can be involuntarily held if someone even thinks they're going to kill themselves?
I'd rather make this known and push for laws to be changed. Because I'm telling you that a massive number of people don't reach out to people because of these (real, valid) fears.
Even if it's true in the United States, it may or may not be as severe as the OP suggested. Could depend on the state or county or whatever. The OP write with position of authority that he lacks on a subject that is literally life or death.
Afraid CPS will take your kids away? Well guess who goes to the orphanage if you bloody off yourself!