Yes. Kbin is federated with basically every Lemmy instance that exists, so you can use Kbin to view, comment and post to other Fediverse instances.
You can kinda think of Kbin as being a Lemmy instance with a different paintjob (it isn’t, but from a user perspective it’s not that far off): Kbin user wants to read/comment/post to Beehaw.org Gaming community? https://kbin.social/m/gaming@beehaw.org. Beehaw user wants to comment to Kbin Tech Magazine? https://beehaw.org/c/tech@kbin.social
I purged my feed from over 150 subs I would spend the first and last few hours each day browsing and commenting from my bed to less than 20 I lurk every few days from my pc, almost all of which are gaming communities with no fediverse replacements.