Having an option to talk to someone when you're alone and having trouble getting out of your own head is a great option. If you don't know what to do and you only see death as the option, having someone give you options seems like a good thing to have available at a relatively low cost.
I don't think anyone is expecting this to "solve suicide" but it sure as hell beats the alternative of... :checks notes: nothing?
Calling a therapist is similar to a "hotline" but you need to have a therapist first, which is a pain in the ass. Making that easier would be a good concrete second step (which a hotline can also help with!)
"sure as hell beats the alternative of... :checks notes: nothing?"
There seem to be many things that we could do, like addressing suicide as a social contagion including in media portrayal, providing better substance abuse and mental health treatment options, etc. A hotline is like a bandaid - its not going to fix the underlying societal issues like disconnection, lack of community, lack of opportunity/hope, social media, etc.