Has ugly cyclic artifacts, would probably look better with mirrored extension (where the image is padded with flipped mirrored copies of itself). E.g. lowpass and watch the sky bleed into the bottom.
Generally block transform techniques are not that interesting over a whole image because the signal isn't stationary.
I wonder whether our agreement upon the ugliness of Fourier artifacts (such as ringing) stems from a learned distaste for low quality image and video compression.
Forget preferences about the ringing, it's actually spilling light from one side of the image to the other, as a result of failure to pad.
But yes, the ringing is ugly— and while there might be some learned elements here, the images are not periodic, they're mixtures of regions with different statistics, and it's inappropriate to spill one to the other.
Generally block transform techniques are not that interesting over a whole image because the signal isn't stationary.