The pace at which you can work at leadership has an ebb and flow. The seasons change in your personal life. Your business has peaks and valleys. Things just change.
When your leadership is in a growth faze, you look for ways to streamline your activities. You delegate, you cut out some activities, you only work with your "A" people.
So what happens when you're not growing? First, you catch your breath. You take a few minutes to rest. Then, do you hit the ground again? Or do you keep resting? Do you forget to do the things that put you into growth mode? Is the comfy couch, or other parts of life, just so much easier?
Be a leader, or don't. But being a "lazy leader" is really just being a bad example.