I sold TVs when 1080p was coming out and there were so many “your eyes can only see the difference between 720p and 1080p if the screen is X big or you’re X close to it” and it was baffling. How could people have such bad eyes? Then I hit 30, 40, and… fuckin HUGE DIFFERENCE STILL. A 16” screen 10m from me? 1080p is going to look FAR better than 720p, much less 4k.
No shade to folks with poor eyesight, but tons of shade to anyone saying there not a difference when they can see it, to justify their purchasing choices (like huge amount of people arguing for 30FPS during the XBone/PS4 gen)