The author advocates the Talos Principle change the texture of various interactive elements to integrate better with the environment. Interestingly, on some of the game developer's bonus videos they specifically mention that play testing revealed the had to make these same elements stick out more so that players could actually see them and use them. In other words, had they listened to this advice the levels would have been less enjoyable to play.
I wonder how architects would handle such usability feedback on their structures in real life.