Yeah... some maps tend to not look that good tbh. But using the system in the video, it will take way longer to make stuff like this:
Whereas it can be made in only a few minutes using the block copy tool.
And yeah, the textures can get repetitive, but I don't think all maps look bad at all.
P.S. I know it says 50 FPS in the screenshots but that's with maxed out graphics. Even on High it runs at 120+