It was User:pdf23ds. Here's the note. Excerpt:
I wish I could have been cryonically preserved. But suicides aren’t treated well enough for that. We get sectioned. I tried asking the cryonics places about options, but they wouldn’t talk to me. Fuck you, Alcor. Fuck you, CI. I might have lived except for you.
That's quite a cruel thing to say to somebody that's suicidally depressed. When you're in that state, every single day is agony and there's little hope for it ever to get better. From that perspective, you are the selfish one for forcing someone else to live in agony for your own pleasure. If you want your suicidal loved ones not to commit suicide, focus on helping reduce the agony, not hurling accusations at them.