I think it's just the sheer quantity of liberal redditors that have flocked here. 100 upvotes is a lot for our posts, and liberals don't really want to hear our content, so they ignore or downvote it. Browsing lemmy.ml, I see plenty of posts that are in the thousands of upvotes. We just aren't the big fish of the small pond anymore.
It's also possible that some of our members might be posting more on other instances. We're one of the most blocked instances in the fediverse. That means our posts/comments will not be visible to most people, and we generally do want to challenge the western narrative.
I did find your post when browsing lemmy.ml by new though. So we are still federated (and I would be shocked if lemmy.ml ever defederated from us)