It is not more pixelated. It's like scaling up all fonts and widgets by 2x, but still rendering them at 4k. So, the fonts and widgets are retina-sharp. Imagine using 4k as the resolution, but rendering all 14pt fonts as 28pt.
Though I get why you might think it's pixelated from stephenr's description.
Though I get why you might think it's pixelated from stephenr's description.