Well, I don't think it's comparable to other big social sites. The interactions you get on discord is more ephemeral and so the nature of content shifts to casual chat and sometimes banter. Every server has it's own retarded clique with in jokes that take time to understand, and I don't think it's worth putting in any kind of effort trying to assimilate into this environment when there are only diminishing returns.
I used to get invited to a lot of servers back when I used to use it a lot, but those turned to be grooming servers with people who were far older than me insisting I post pictures of myself and join them in the voice chat, knowing full well I was a minor back then. I guess the word got out, and my name got passed around in some circles and the rest is history. This kind of thing persisted until I deleted my account. I made another account a couple of years later, but I only use it for tracking seasonal anime and manga release cycles, and message mods when there are release issues.
As opposed to that, posts have a longer shelf life on reddit with plenty of interaction, and votes, even though they are derided among the imageboard crowd, acts as a form of quality control so the type of content worth your time is naturally presented above everything else. You can learn plenty of things on reddit and gain insights into things you didn't even know about, and that's far more valuable than what discord has to offer.