That is both true and an incredibly lame argument when I write it out. I have strong feelings about octopuseses and the people who eat them for entertainment. I wish we knew how sentient and pain-aware lobsters are.
It's not hard to kill a lobster before you drop it in the pot - slip a knife into its neck above its carapace. This was a test on one of those Gordon Ramsay shows, so if he can kill them first and still make tasty food, I think we all can.
But really, if there were an animal that I could only eat by inflicting pain on it first (i.e. causing pain and not striving to minimize its suffering), I wouldn't eat it.