I see the same numbers when I look at https://lemmy.ml/c/postmarketOS and https://lemmy.world/c/[email protected]
Only the number of subscribers, posts and comments differ. Anyway, it's still order of magnitude away from what was possible on reddit.
I'm looking at the stats of this community and I gotta say 3 users / day, 38 users / 6 months is negligible even compared to small community on reddit. I don't really think it would split anything.