In short, placing information in supplementary materials should be justified, organised within and between files, and controlled by peers.
The article is behind a paywall due to Springer Nature’s outrageous publication fees, but it can be accessed a few times through this link: rdcu.be/e6q9f
While the file drawer problem is about selectively *reporting* findings, misusing supplementary materials is about selectively *presenting* information. Everything is technically there and available, but not all elements are made equally visible to readers.