for that matter we should stop calling 1080p HD :(
on a mordern display 1080p content are visibly pixilated
on a mordern display 1080p content are visibly pixilated
(And don't get me started on how 4K is a blatant lie as it's really 3860-px wide. 2160p is also ok. Real 4K is a thing, but not consumer).
The real quality problem is bitrate, not raw resolution. A 1080p Blu-ray looks absolutely amazing on a 4K TV. Low-bitrate 4k looks like dogshit. I’d be ok with Netflix’s 1080p if the compression wasn’t so poor on some titles!