You don't seem to understand the meaning of the words "angst" or "emo", at least not going by the couple of messages I clicked through on the site.

"It’s been rough. I’m trying to help my husband work through his mental illness. I love him but some days I feel like he takes it out on me a bit with his moods. I know it will get better when he starts counseling next week but right now it is tough. My job is very stressful and I go back next week after two weeks of medical leave to remove an organ and benign tumor. Hoping for sunnier days ahead."

Of course I wouldn't describe major challenges like the one you quoted as angst or emo. The "respond to the strongest plausible interpretation of what someone says, not a weaker one that's easier to criticize" reaction to my message would have been to assume that the majority of messages that I saw did indeed fit the generally understood definitions of angst/emo. Obviously the difference here is that the messages that we see are randomized so of course I saw different messages than you did. And for the record I read messages for about 30 minutes today.

Anonymity allow people to put down the mask they wear everyday.

Sometimes it's sadness, sometimes it's anger.