One thing that's happening currently that has been alluded to by other people in the comments is the rapid disappearance of forums.

Instead of finding a forum dedicated to something you're interested in and getting access to a ton of structured, easily searchable information that has built up over time, things have moved to discord.

Discord's primary advantage is real-time communication, which comes at the cost of structured, long-term, and (generally) on topic knowledge. This is not a good trade off, imo. Discord is also a social media platform, which in itself comes with issues common with modern platforms.