this post was submitted on 21 May 2024
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Anyone with a background in computing would respond, "duh." The operating system maintains a file table which contains the addresses of pieces of data on the disk. Deleting a file just removed its file table entry, and in most cases leaves the data untouched. That's why data recovery software exists, and it's also how we have the "Trash" or "Recycle Bin". If you want the photos completely erased, you'll need to overwrite the data, which wastes time and write cycles...
You're mixing up two things. In Trash, neither the pointers to the data, nor the actual data is deleted, they're just marked as deleted by moving them to a folder called Trash, or appending .trashed to their file name, which the file management part of the OS treats as trashed. If you clear your Trash, or directly delete the file permanently, the pointers are deleted so any data on the disk is marked as free to be overwritten, but until something actually overwrites it, you can recover it using data recovery software. If you change all the physical bits on the disk then the data is permanently deleted and can't be recovered. Unless, of course, it was copied to someone else's server first.
You're right, except that this is about years-old deleted pics. Like deleted-in-2021 old. The blocks on the partition have long since been overwritten.