Takamura gets to go in the ring and be a wild savage, running on “instinct” and that is praised. To a lesser extent Bryan Hawk and Woli had their wild instincts praised (by the author).
But now the author is going to lecture us and Ippo (through the Coach) because Ippo threw a hard punch in the ring? Even if that was “violence”, how is that different between the unrestrained fighting of Takamura, Hawk, Woli... or even someone like Sendo?