Just try to imagine it, Rillaboom is standing there with the drum, has to move two fucking steps to get closer to the enemy, needs to pick up the drum, put in his back, move, get to the destination, put drum back again, pick his drumsticks...
This shit ruins the fucker's mobility, even the anime will have problem with this shit because it will force Rillaboom to stay the whole fight standing in the same place