The GoPro one in Seoul is very impressive.... I'm guessing they must be doing super-duper processing of the image. Still, for the form factor it looks like a great result.
I'd be curious to see how the low-light is compared with previous normal GoPros. Some time ago I made the case that an action camera is the perfect vlogging camera, as it's the size of a pair of wireless earbuds but is mostly without the issues that continue to plague the "vlogging" cameras that aren't wide enough / crop for stabilisation / etc. If I was a vlogger I'd be using one of these 8K action cameras for sure, using the wide for talking head stuff and cropping in for more normal FOVs. No-one on YT can tell if you edit a 1080p and upscale to 4K on export, so a 2K crop from an 8K sensor gives a pretty useful FOV, assuming the readout isn't terrible.