I heard that the All feed aggregates content from all communities that instance members have subscribed to, meaning if I subscribe to a new community, it’ll start showing up in everyone else’s All feed.
Let’s suppose I have an account on an instance with a particular thematic focus. Should I avoid subscribing to communities outside of that theme, in order to preserve the purity of their All feed?
Personally I think it’s even the opposite. What Lemmy needs is more interesting content and interaction, whether it’s “niche” or not, and making content more visible to others spreads awareness so to speak. Deliberately holding back your own interests just because it could inconvenience someone else on the internet IF they sort their feed in a specific way … that’s counter-productive both for the site as a whole and your own spare time / interests in particular. Just subscribe to whatever community you want.
Especially if it’s something niche that would not get much traffic otherwise.