When I started on Lemmy after the Reddit exodus, I started by browsing by All, subscribing to communities that looked interesting, and blocking communities that I didn't want to see. I figured I'd eventually move to browsing by Subscribed, but more than a year later and I still browse by All. Removing the communities I didn't want to see, especially the overly prolific meme communities, and blocking the posting bots has made browsing New just fine.

So I guess I see duplicate communities assuming there are posts and I haven't blocked them.