It all depends on how close you sit to the screen. What matters is pixel density, and that’s a function of both the resolution and how close you’re sitting. So

It all depends on how close you sit to the screen. What matters is pixel density, and that’s a function of both the resolution and how close you’re sitting. So if you have a 4k TV and a 4k monitor, there’s actually quite a difference. If your monitor is bigger than 24” you’re getting way worse pixel density and visible pixels at the distance you’re sitting. On TVs it’s typically never a problem because you’re sitting far enough away.