It's a problem on every niche community on Lemmy. Enough people are used to just trying the subReddit that if you create the subreddit there, people just show up.

We don't have that on Lemmy. You've basically gotta get 2-3 people to keep posting content and hope a few more find it on top > last X hours. But it generally takes weeks of throwing content into a void to get there.

It's why the meme communities are doing better. It's a hell of a lot easier to throw two dozen memes into an empty void than it is to throw higher effort posts into the void. (It's not an actual void. Maybe one in ten posts will get real interaction. That just feels a lot like a void when you're putting in the effort.)