What's even more confusing is that after we've settled that 3840x2160 is 4k, which is 4x the pixels of 1920x1080, just like 8k is 4x the pixels of 4k, instead of calling 1920x1080 "2k", everyone is starting to call 2560x1440 "2k", even though 4k is only ~2x the pixels of 2560x1440.

I actually prefer UHD being promoted, because I wouldn't want us to switch to another weird resolution now, and I want videos to just scale up perfectly.