A Krush typically begins with destryoing enemy towers while the opponent is still in archaic age, so it is an attack against the enemy home base, a rush. The Krusher will also attack other buildings that are outside TC range, such as houses that are build adjacent to towers, or docks while the decon power is recharging. Of course the krusher will also take any opportunity to kill villagers when he gets it. But basically, it is a very early attack on the enemy home base, even if it is not directly aimed at destroying the enemy TC right away. For that reason, "Krush" is absolutely appropiate.
Darkness is a state of mind
Valor is the contempt of Death and Pain. (Tacitus)
Problems worthy of attack prove their worth by hitting back. (Piet Hein)