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Very strange presentation of Krita, but I'll take it. The overview of what you'll be able to do doesn't actually list anything you can do, and the comic recommends using it to deblur photographs, which is definitely not something I would recommend Krita for.
Or indeed something that is really possible with anything. If it's blurry it's broken. Learn your camera settings and take another.
There's some surprisingly sci-fi stuff that's possible with image deconvolution. Not exactly practical, but it is possible to recover some information from a blurry photo.
Yeah, I'll wager computer generated blur is easier to undo than real physics generated blur.
There was that Canadian a few years ago who used a swirly blur on a picture of him raping kids, and the German police reversed it and had him locked up.
I mean, you're not wrong - but it's a technique used every day for super-resolution microscopy.