So I just simply compared the top posts of lemmy r/all and reddits r/all.
Currently this month's top 5 r/all posts are somewhere between 228k - 142k upvotes, while lemmy's are between 2.2k and 1.7k.

The monthly active user count of reddit is over a billion, while that of lemmy is 1.2 million(edit: no it's 40k. It's looking even worse for reddit). If we just compare them by these metrics, reddit has 1000x the users but 100x engagement. And this also held true when I compared the meme subreddits using the same metric, but news subreddit was an outlier where the subscriber to upvote ratio was equal between them.

It's extremely crude calculation, but since I observed this pattern, I felt I need to share this somewhere. What I feel is that as social media platform gets larger, the number of lurkers, people who don't engage, increase. could there be any other reason?