Absolutely. I just bought a 4K laptop (also OLED) and I can't believe how incredibly readable very small text is. It's almost unreal how good this looks.
It's a Thinkpad X1 Extreme, with 4K OLED. The primary downside of the screen is that it's rather shiny and reflective in the wrong light. That apparently comes with non-matte screens. In the right light, it's the best screen I've ever seen.
Absolutely. I just bought a 4K laptop (also OLED) and I can't believe how incredibly readable very small text is. It's almost unreal how good this looks.