'Don't do anything unnecessary. '

Those words were practically a staple from Akainu when it came to anything concerning Ryokugyu. If he said it once, he said it a thousand times, and he'd probably say it more, too. Ryokugyu was always going against what Akainu told him in the heat of the moment, quick to anger, and a little too fast to react. His insane strength mixed with his devil fruit left little to actual consequence outside of another lecture via screaming from Akainu. So ultimately, trying to reason with him was a complete waste of time.