Yes. You do.
Let me get this straight -- you believe a company can knowingly sell a defective product legally?
That same law applies in this case.
Aw, don't spoil the fun. Let him keep digging himself in deeper and deeper and deeper. It'll be fun to watch the New Dominick go "Mnfph pfmfpfh mnftp!" when people taunt him after his attacks come home to roost and he's... well, why ruin the surprise. :)