While there can be little doubt that these Somalis were not out fishing, what the RN have done here is itself an act of piracy; they've boarded a foreign vessel and robbed the occupants of their weapons and sunk one of their boats. It sets a dangerous precedent if navy ships can just board and "confiscate" weapons in international waters without any actual proof that they were pirates or had done anything illegal.
It sets a "dangerous precedent" for the pirates. If only other nations' navies would follow suit and close that loophole the pirates have been using to escape, it might give them pause as to the seriousness of what they are doing out there trying to "pirate" innocent commercial shipping vessels.
I'd rather the incident not been captured on film and post on the Net, cause now you know somewhere the "pirates" are changing tactics and sometime in the future there will be an incident with loss of life from a firefight (no great loss if all the pirates get killed IMHO, just hate to see any serviceman lose his life to those scum) and the media will be all over it, asking the same thing you did. Better to just capture the thugs (that's all they are honestly), sink their vessel, then apply old time naval justice and hang em high.
As far as the pirate "family", all they would ever need to know is their relative was lost at sea. Lose enough of them and you will see fewer and fewer hijackings.
What would your excuse be for having RPG's and other military type weapons if you were just out fishing? Defend yourself from the fish?
Now that the media has access to it, only God knows what kind of stories will come out about those poor hapless, defenseless fishermen, only out there trying to support their families..............