Try to explain how the hidden content would be found? It effectively doesn’t exist until the password is in place. It isn’t hidden, it isn’t connected at all.
I mean - if there are multiple sdcards in the device - and they each contain a hidden partition - how is the X-RAY going to determine that the reported 5GB (or whatever) isn't matching the devices actual 7GB (for example)
SD card the author says was added to offset the cost of eMMC but would presumably stand out as anomalous with whatever AI is classifying the scan