On the Microsoft page[1] about this change they say > Storage of this “dark” data takes up space on servers and results in increased electricity consumption, generating 4% of global greenhouse gas emissions in 2020 alone. Where "dark" data is data that is unused. However they link to this World Economic Forum Page [2] which says > In 2020, digitisation was purported to generate 4% of global greenhouse gas emissions.…
This isn't dark data. It must be kept, so it is being used.