What you’re experiencing I think is completely normal. Not to put too fine a point on it, but Reddit is mainstream, and Lemmy is not. Hypothetically, you might find, say, your plumber on Reddit, who casually browses in down time. The most normal user probably just uses a browser or the normal app; they may have very little or no knowledge about the reddit blackouts, what’s happening, and why.
Maybe some users were using third party apps and know what happened, but if they don’t care much about the reasons they might just stop using Reddit or settle with the native app. This category of users and the last are all probably making up a large part of the user base in general, and of the non-tech (normal?) Subreddits in particular.
The users who migrated to Lemmy by this point will be pretty much a reversal of Reddit’s dynamic. The majority will be privacy/tech minded and have moved specifically in protest to Reddit’s corporate/capitalist practices. They are here hoping to disrupt the norm and prove that we don’t require a centralized power system to run social media.
Then there are probably a minority of users who are simply curious because they heard about an alternative and wanted to see what this is all about. A lot of these users probably don’t stick around if they don’t see the kind of stuff they want to see.
Out of any groups, only a small portion will provide content, and a slightly larger portion will take part in discussion. Memes are the easiest content to produce and to consume, so that’s probably why they’re so prevalent.
Personally I enjoy the conversation around privacy, FOSS, etc, but I do truly hope we’ll start to see more of the normal communities develop here. Particularly I miss some of the creative writing communities which I know for sure haven’t really transferred off of Reddit by this point.