Correction sir, the absolute most toxic and by far dumbest of the dumb D2 players are on the Blizzard forums. They are so bad that they are actually below a couple levels from Reddit.
The thing about Reddit is that this is the internet forum for dumbies. Register once, and one can join whatever sub they want. So 100k members does not mean 100k members, it means 100k have passed through and clicked one single button to join. I do pass by there from time to time, and yes even posting the letters j and s and p are VERBOTTEN!. Sucks for them because one of the best crafting guides on the internet is found here, and the question on crafting comes up quite often there where idiots will give misleading information. I do not even bother anymore to correct them.
Its the walled gardens of the internet
Jsp is from the older open era of the internet. You can't directly link outside non-whitelisted / mainstream sites, but you're free to talk about them, free to discuss anything, you can repost information and guides and the mods here are pretty lax about outside links if they're to sites that don't pose a security risk / aren't redirect links or shorteners that could be used for scamming. The focus on JSP is ensuring trade security. The focus on reddit is ensuring political security. They don't care much about individual games or hobbies or IP, they care about enforcing a strict political viewpoint and banning anything that could threaten it- not just those opposed, but even the idea of linking to anyone that could contradict them, anyone advocating more freedom, any meta discussions about the topic. They care a lot less about the fact jsp has paul's monetization and FG trading and more about the fact jsp is an open board. Look what happened with their magic the gathering subs in the past week, the admins cracked down to make the gardens walled again.
In general, the digg style of upvote/downvote system is absolutely horrible at creating good access to information resources like the classical internet forum setup jsp has. Strategy & Guides has been able to curate and link to threads and keep them bumped or archived where the quality is obvious, and incorrect information just dissipates as people learn how mechanics work. In an echo chamber like reddit, it doesn't matter if someone posts the correct information once or twice even if it gets upvoted or commented on, it will be forgotten and hidden within 24 hours and you'll have people babbling about the same nonsense a week later. As you say its not worth correcting them, because you have zero impact, your words will vanish into obscurity and the only effect they had was training some AI dataset.