Nope! Sperm whales eat extremely large deep-sea squids, like the Giant and Colossal Squids. They have also been known to opportunistically eat dead whales, sharks, and seals, but not actively hunt them. They got real big teeth for it too:
However, they only have teeth on thier bottom jaw! they have corresponding holes in their top jaw for the teeth to lock into, which makes hanging onto a slippery, boneless squid:
It should be noted that the human here isn’t in particular danger of being eaten on purpose, but an accidental swing of it’s multi-ton head, a clip from the teeth, or being directly in the line of it’s sonar could seriously injure or kill them- Divers that have been in the direct line of echolocation for a sperm whale calf have described being hit with the soundwave like “being kicked by a horse” and some have suffered internal organ damage. Sperm whales, like other large whales, aren’t particularly aggressive towards humans, but they are still very large wild animals who behave in unpredictable ways.
I know that in US waters, it’s illegal to intentionally come within 300 yards of any whale or dolphin, and if one appears closer you should turn off your engine or stop paddling to avoid accidental injury to you or it. This human is doing something dangerous and ill-advised, but it’s still hopeful that we can love something like a 130,000 lb deep-diving, squid-eating Oceanic former ungulate.