It's a tradeoff. A 800x600 CRT will look "blurry" compared to a LCD when rendering old-style GUIs or text in a properly hinted font, but the 800x600 LCD will look blocky and pixelated when rendering a real-world photorealistic image compared to the CRT. The real look of that CRT is more like taking that old 800x600 photo and upscaling it to 1440x1080 on a modern FullHD display. Blurry to be sure, but not blocky or pixelated. Early LCDs also had terrible image persistence/ghosting issues that showed up when playing games.