Designed for personal use as a PWA specifically on my iPhone. I migrated from android where i had a TI-89 emulator app. No such thing exists for iOS. Usability by others was never a requirement :)
My website, gameboyessentials.com, would not exist without this esoteric CSS property. I wanted to show Game Boy images in their exact resolution (160 by 144). With image-rendering: pixelated; I have crisp pictures on my site whose sizes are counted in bytes.