You speak as if you think these laws were made up on a whim without any reasons.
In my opinion it's up the the players to decide what the Corsairs and their characters are like. The lore is just the background history and general guidelines.
It's the Corsair council of elders that are enforcing these laws, but there is no one who says, that you can't actually do as you damn well please.
The only reason the Corsair council has any power is through official faction rights, and mind you there is only one official corsair faction left.
(besides the fact that the majority of the Corsair players seems to agree with the laws that has been put out, so maybe it didn't hinder them any in the first place)