Personally I feel like it happens less often. The Catholic Church really have a reputation. I’ve only ever heard ‘altar boy’ to mean a young boy who’s being groomed and taken advantage of. I have no fucking clue what an altar boy really is.
Whoever it definitely still happens with protestants. Usually with youth pastors (surprise, surprise).
Suicide comes in many different flavors. The most common in my limited experience is desperation. If you are so utterly desperate for literally anyone to listen to you, I don’t see how it would hurt. Especially since there’s such a positive stigma surrounding the hotline. I personally know a couple of people that the hotline helped.