While this is necessary to prevent spiraling storage costs, it will also remove images from old posts when users prune their media collection. The impact of this will vary depending on the image - was the image the sole purpose of the post or just so that the post would get more attention?
I don’t have a solution right now, but I’ll put my thoughts here and hopefully someone else can think of a solution.
Very interesting read, don’t miss the follow-up: https://dustycloud.org/blog/re-re-bluesky-decentralization/