High resolution screen zoom in a picture have a HIGHER chance to be blurry compared to a lower resolution screen.
Have you tried watching a 720p video on a 4k screen? Blurry right? compared to a 720p video on a 1080p screen.
Higher resolution .Have human eyes specs improved? NO! Human eyes still remain the same for thousands of years, retina, just make sure human eyes cannot see the dots, its enough! Focus on something more important: Weight / Battery life / Performance, once those are ad.