It's not zoomed in. It is a 1:1 picture-excerpt of Kirby007's 4K-original files to fit into the 972 pixl with usable for forum postings. Not upscaled, not downscaled.
For all the people here who are to lazy to open the pictures in a new tab and just scroll down in the thread to form their opinion.
Although, there are probably even a few people who browse the forum with their old phone or 3DS browser with even more downscaled pictures.
It is zoomed in, I am looking at Kirby's images in full screen right now, and compared to your images the character is more than twice as big on screen in the latter.
Not, it is NOT zoomed in. If you display kirbys 4K-screenshots on a 4K-display in fullscreen, the character is the same size.
If you display kirbys 4K-screenshots on a 1080p-display in fullscreen, it is downscaled at first to fit on the lower res screen!
To evaluate the screenshot in native resolution, you have to click on the picture again (mouse curser should have a small plus when hovering over the picture).