I'm not defending Rachel for the despicable actions that got her banned, which are the subject of this thread. We're straying pretty far from that, but my two cents on your remarks: she and the other person were not extremely disrespectful to the poster you mentioned. They felt the same way I did (and still do) and I'd guess the same way others felt (and still do).
There are so many people here with serious mental and physical issues. So many people in terrible life situations, situations that are incredibly hard to overcome, that boggle the mind. But that wasn't the situation in this case. Rachel and the other person simply asked, openly and honestly, "So that's your big problem, that's why you want to end your life? You're a young healthy guy who got banned from some internet site and you want to CTB? Huh? WTF?" And I'm paraphrasing, they were actually much more polite. (Oh, and I believe the other person was a 9/11 first responder who found a new job at the age of 40.) You are correct, they were not sympathetic.
Yes, it's impossible and probably wrong to compare the difficulties of others with your own, and find them lacking. But we all do it, it's human nature. This is perhaps unpopular to say, but some stories are just eye-rolling trivial and in many ways an insult to the people here--of any age--with real problems. Especially when these stories come from younger posters, we middle-aged and older folks just can't stop ourselves from responding, "No, no, no. Don't kill yourself because you lost your girlfriend, or your mom is mean, or you don't fit in at school, or you were fired from your first job. Yeah, you're in pain, but things will get better, hang in there, life's a bitch but you've got a long way to go and you can make it."
Basically that's all they were saying, but this poster insisted that his story was an epic tragedy that left him no other choice but death.