Y’all don’t update your services?

It would put the more popular instances under enormous stress, if they had to serve every single subscriber from any other instance.

From what I understand, media (images, videos, etc.) is not cached. Does that not mean that, in the worst case where every post contained an image, the instance would be serving every subscriber, anyways?

Please correct me if I am wrong, but this feels like a flaw with how Lemmy (perhaps other fediverse apps as well, I’m not sure) is designed. Why do I need to store all posts made to a community that one of the users on my instance subscribes to? Would it not be better to simply store my user’s posts, and comments, and the posts made to any communities hosted on my instance? Why do I need to store information from other instances, and users?