I don’t use RSS for lemmy or kbin communities. I’ve got nextcloud news for RSS feeds, and lemmy for communities I can interact with.

In Feedly I’ve “subscribed” via RSS to my Lemmy subscribed communities. It’s pretty good and lets me keep everything in one place.

I use rss to discover content that I post to Lemmy. The value of Lemmy, for me, is the community and the comments, so when I see something interesting in my rss feed reader, I post it to a relevant community to see what folks have to say.