I just don't understand people who post on subreddits like WSB, join the discord and such. I guess HN could be a similar community, but without as much risk (maybe?)and think they're joining a community that wants them to "win."

Blindly trusting people while thinking you found an unlimited money hack, you leverage up and lose almost all of it.

Is that just gambling, or are people just setting up /r/WSB to lead pigs to slaughter?

As I write this, I can see how similar it is with HN, but, no speculation or gambling - we just exchange information, and where it leads/what you chose to believe could very well possibly end the same as above, I guess.