I hate to tell you, but this website is functionally just a mini-reddit. And it exhibits as much toxicity as any semi-special-interest subreddit (perhaps even more, due to the many posts that are politically topical).
What's funny is I didn't even link to them, I just named the sub-reddits. I think Reddit has gone way downhill and far surpassed Eternal September (I refer to it as the new AOL), but that's largely the defaults and popular sub-reddits, I agree that niche sub-reddits are generally better and at least as likely to produce the same quality discussions you'd find here.