"Significantly more difficult" is quite an exaggeration. They throw a lot of jargon at you when describing what Lemmy is and how it all works; but it's pretty much the same as Reddit in how it's presented and how to find things. The biggest difference, really, is instances. Communities are like subreddits, but instances are like... Alternate dimensions of the same site. And yet you can still see those dimensions from each other if the instance admins don't block things, and you can even continue to post and comment as if they were the same thing, making it something you don't even have to worry about.

The content will come with enough seed users adding their own content, which this migration may just be able to do.