We could all get a lot more done if we kept it simple. A good example is from Virgin Orbit’s LauncherOne: we aren't seeking to build the world's fastest rocket, nor the biggest rocket, nor the strongest. Instead, we're aiming to build the world's most affordable, flexible, and reliable rocket. Simplicity is a great way to build something that works well without costing too much. It is, of course, still a rocket - but by the standards of rockets, the design of LauncherOne is about as simple as it gets.
Keeping it simple is also a great help when it comes to communication. I am dyslexic and find it much easier to digest information in clear, concise chunks. As Einstein said, if you can't explain it simply, you don't understand it well enough. It often baffles me how much people waffle before getting to the point.