I don't agree that there should be strictures that enforce similarity to Reddit on instances if they want to be recommended. You've apparently been using Lemmy for three days now, based on your git repo history and your top-level comment in this thread. As a longtime Lemmy user, allow me to point out that Lemmy is not, and should not seek to be, exactly like Reddit. To enforce that would be to stifle potential avenues of improvement (like, as I've mentioned, removing downvotes).
Also, growth for growth's sake is not something I think should be sought after; your policies seem to be entirely focused on growth with no concern for quality or community, which I don't agree with.
If you're a liberal, as most Redditors are, you probably won't like it much, but Hexbear.net is far more active, and has plenty of news posted. (Keep in mind that "liberal" here covers all of the US political spectrum that doesn't qualify as fascist; i.e. moderate republicans are liberals too. Hexbear is a communist instance.) It's not mentioned on join-lemmy yet because it's a fork, but there are efforts ongoing to merge back to upstream so federation is possible (one of the main roadblocks is the much-higher volume of activity, which is uncovering bugs that don't show up under lighter loads).