I'm one of those people who posts suicidal posts often (not here, but at another forum). When I post them, I'm genuinely in distress, but looking back I think I was safe (mostly because I live at home with my parents).

I posted those things often, every few weeks or so and people got really frustrated with me at times. Seeing people get frustrated and angry only made me feel worse. Having people accuse me of being manipulative and crying wolf put me in more distress.

All that would have been avoided if only I weren't allowed to post suicidal things in the first place.

I think for me at least, a no suicidal posts rule is a good thing to have. It forces me to express my distress in other ways. It forces me out of the habit of resorting to suicidal thoughts for all my upsets.