I don't know. I've been here for a while, posted lots, lurked even more, but the brainwashing thing didn't get to me, I guess? Or maybe I didn't understand what "philosophy" on here is the problem...
(For the record, this is mostly a response to Mr2005 and OP.)
There's no brainwashing. Honestly, it sounds like a fixthe26 conspiracy theory with how ludicrous the claim is. I'll be one to admit that being on this site isn't the greatest for mental health, but plenty of people have unhealthy coping mechanisms, and somehow venting on the suicide forum is apparently the greatest evil to exist on the planet. Sure, buddy.
There are a few (and I mean a very small minority) of SS users who wish to "spread misery" i.e. scammers, predators, trolls etc. but most of the community is just a bunch of us suicidal people screaming into the void because they have nowhere else to scream. Nobody is forcing their life philosophies on other people.
That being said, I really dislike posts that seem to be "gatekeeping" suicide or shaming people for wanting to CTB when "they are not at their lowest" yet. Assuming that people would want to hit their rock bottom first before CTB'ing. Wouldn't it make sense that if you saw the horrible trajectory up ahead, you'd want to go out quicker before suffering through what life throws at you? It's not about building character. It's about getting the fuck out before having to deal with that shit.
Let's not infantilize the userbase. We came here because we want to die. Other spaces on the internet will either censor us or tell us to go call the suicide hotline or have random internet strangers sending us cookie-cutter phrases like "it gets better" or "you have so much to live for". Don't browse a suicide forum if you're not expecting the users to be brutally honest about their own misery. People have tried to push their "philosophies" onto others in the past, and it doesn't work. It turns out that even suicidal people have different opinions. Crazy, I know. Again, we're all just screaming into the void, definitely far from a "hive-mind" as goes the implication.