One of the advantages of being on Kbin is that you can scroll All by New, and see genuinely interesting content
On Reddit, browsing r/All by new would show so much spam, it was really pointless if you just were looking for content. One relied on reddit's algorithm to show you new stuff you hadn't actively searched for. The nice thing about Kbin, and the threadiverse in general, is that you can browse m/All by New as see genuinely interesting posts.
It’s how I find interesting magazines and Lemmy communities. Browse new for a while with federation on and see what interesting things come past on the stream.
In the kbin web interface, I click the federation button (triangle icon) in the sidebar and a federation status On/Off option appears, and yes, the initial setting (default) is On.