For my Linux ISOs, I usually am good with 20 to 30GB 4K files. I can’t tell difference from REMUX. The 10 to 15GB look a little wonky though.
Data Hoarder
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 (tm) ). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.
r/piracy
Very compressed low bitrate 4K may be much worse than less compressed high bitrate 1080p.
I prefer to collect REMUX copies of movies I really like.