I imagine the show itself was mastered in 2K. They could release it in 4K, but there wouldn't be any more detail. You'd just be buying a box with "4K" on it.
But Panda says so, so it must be so. He'll also put it in spoiler tags because he'll say it's a spoiler
It really isn't, as you'd have to squish the horizontal resolution to get all the information on screen. https://www.digitalcitizen.life/what-screen-resolution-or-aspect-ratio-what-do-720p-1080i-1080p-mean
Has anyone seen the latest ai upscaling on the new 8K TVs? The pixel count may be overkill for most home set ups, but the upscaling is a huge leap forward than we've had with 4K sets. 1080 sources upscaled look as good, if not better than 4k content on most current 4k Tvs.