Clearly he does it pander to his fake base and show them what a tougn strong guy he and how invincible he is because he can lie and cheat and steal and maim and cripple n murder and no ones does or says diddly. He gets away with murder LITERALLY.
Bragging bast**d boy is beloved by his adoring worshippers. The more he is an SOB the more dearly beloved he be.