This has nothing to do with federation, reddit was a single system and had the exact same issue. It’s simply a result of having communities that overlap in topics, or articles that are relevant for multiple communities.

The key is that each of these posts has a different discussion due to the different community it is in, isn’t that good?

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If you’re on Android, Jerboa allows you to control font size and feed type (cards, list…) so you can make it pretty condensed. I use List and font 14, and view about a dozen posts/scroll

The generic one looks like a good starting point, thanks!