"Man-Spreading" Is All About Ego

Is this not what man-spreading is? Puffing up to take up more space and display some form of power and superiority? Why else would a man would choose to sit in on public transit in a way that exposes his most vulnerable body parts, open to potential contact with knees and parcels at the sudden jolt of an expected brake. If I were a man, I would protect my fragile spheres, not make them targets.