Although valid, this illustration is not complete, as it depicts only what clutter is without considering what it does. It portrays clutter as passive, without consequence. Yet clutter does have repercussions. It impacts your life. As articulated in Webster's latter definition, it interferes.
Clutter diminishes clarity.
It occupies space, both physical and mental. It impedes movement and progress, and detracts from efficiency and effectiveness. Getting rid of clutter is not about cleaning. It is about increasing focus and decreasing interference. Far from a low-level task best relegated to the night time janitorial crew, it is a process whose return on investment grows exponentially the more potential value you have to contribute.