datahoarder
Who are we?
We are digital librarians. Among us are represented the various reasons to keep data -- legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g. government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Time). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.
We are one. We are legion. And we're trying really hard not to forget.
-- 5-4-3-2-1-bang from this thread
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This is not the helpful answer you were looking for, sorry. I'm fairly certain that the consensus among data hoarders is that the answer is more storage space not smaller files.
And utilities for identify the eventual duplicates to save space (while still ensuring you don’t have only 1 copy that can be corrupted)
Like anything else it’s always trade offs.