True but that makes him the badass.
Also he is strong in his arms, you see that when he trains with his weights.
But yeah Luffy also has a skill to piss all his enemies off because the first boss he hits her off the boat, that is where they first see Coby, the boy with the pink hair.
And the second boss is with Zoro first he hit his son then crushed the statue then they save Zoro.
Then they are fighting and Luffy wins.
But when he gets Nami is also pretty funny with Captain Buggy.