Something I find deeply funny about this is the amount of work invested here just to have the default background quality setting in Windows 10 still be < 100%.
In Windows when you set a wallpaper it (sometimes) silently transcodes the one you selected into a new, smaller version. It doesn't always, there's a heuristic, but it's assumed it happens to prevent people from selecting a 1TB terapixel photo and have it destroy the machine.
Anyway, since it transcodes the WP into a JPEG, it has the ability to select a compression ratio. That ratio is pretty famously < 100% and as a result there's some degenerate cases where a wallpaper that looks good when viewed in the filesystem looks terrible when set to the background.
I've seen machines which needed to swap to show the desktop, because the wallpaper was a high/true-colour BMP and it was like half the memory the machine had!
Right, I feel like between that and seeing it a lot over remote desktop I've never really appreciated the quality of the original. I always liked the wallpaper set from the windows 9x era because they were designed to look good in low quality 256-color modes.
That's the Microsoft I am used to ^^