*chuckles* Personally, I'm enamored when a lulwutting trader opens up on me. It means he gets to die.
As to the trader, it's hard to quantify quality. Sometimes it's not to be unexpected that he's not going to sit around and wait for a bigger fish to come down the pond.
Of course, It's a rare bird to meet someone with a cargo hold and a head on his shoulders at the same time.
Just a general issue that transcends traders, that same fellow who opens up on you there will be pirating you tomorrow.