I wouldn’t hold Reddit up as having good moderation, like, at all. There’s a reason it has the reputation it has, the administration is constantly trying to control the chaos. There’s a reason that problems with the platform make the news: people have found that bad publicity is the only way to get things changed.
I don’t know a single popular subreddit that is able to keep on top of all of the asshole posts, let alone actually moderate so that they don’t occur, which is the ideal. The most common form of public facing moderation is to lock threads because they’ve gotten too far out of hand, and there just isn’t enough time in the day for the mods to handle it all.
There’s also a ton of harassment on the site, and often reporting it does not result in anything happening. This is a very common complain about /r/TwoXChromosomes, which is literally supposed to be their forum for women to talk about things that affect them. Every highly upvoted post seems to have some comment about how the poster got a ton of harassing PMs.
Reddit also has other issues that make is very different from this place. It has a voting system, resulting in what is effectively community moderation based on popularity. Pretty much every subreddit becomes very one-sided on a multitude of topics, to the point many are full on echo chambers. It’s the nature of the system: all it takes is for there to be more people downvoting you than upvoting you, and your post sinks down the page. Eventually it even becomes hidden by default. And, once that happens, it’s a self-perpetuating cycle.
Reddit also does not handle long conversations. It is ultimately a glorified comments section. You comment on the “post.” You can reply to other people, but the indentation and hiding of replies that get to a certain depth result in those petering out. Outside of that system, posts are constantly reordered based on votes, meaning no real conversation can occur. You get tons of repeats, tons people saying opposite things.
And, yet, that voting system is a huge part of how Reddit actually can function. It is in and of itself a form of moderation, albeit a rather capricious one. Without it, the larger subreddits wouldn’t be as manageable as they are.
I do post there. But it feels a lot more like posting in the YouTube comments section than like an actual forum. It fill my itch of being able to comment on websites or stories.
But I would never hold it up as being a place for the level of conversation we have here, nor of being well moderated. I would not recommend websites copy their model.
They have, in fairness, gotten better over time. But it’s been with kicks and starts, and through the use of public shaming and advertisers pulling financial support.
It also, BTW, isn’t profitable. We worry about the SDMB making enough to keep the lights on, but they are still, AFAIK, losing money. They’re just big enough that they’re allowed to keep trying, hoping they’ll eventually stumble into a solution.