Reminds me of how people were crashing the PSP's XMB with BMP and TIFF files twenty years ago. I was just a kid, and began "pirating" every one of my classmates' consoles (some in exchange for a small amount of money). Good times.
This was a user-empowering application of the vulnerability. Obviously, a bug that allows root-level arbitrary code execution just by getting the user to load a single image could be used for some pretty bad stuff. (And perhaps was.)