Is Fight Club soap vegan-friendly?

[RealHousewivesOfTaunton]

DH and I had an animated discussion on this earlier.

In Fight Club, the protagonist makes £££ making soap from fat stolen from liposuction clinic bins. My thinking is that this soap would be vegan because:

• No animals were harmed in the production of this soap.
• Voluntarily donated human fat is more animal-friendly than habitat-destroying palm oil.

DH says human fat is an animal product and therefore not vegan. He's also absolutely banned me from asking our vegan NDN to settle the question so I'm turning to MN.

It makes complete sense to me. I'm not vegan but try to avoid palm oil for ethical reasons.

In the film that's the kind of point - the soap users are also exploited as they would have no idea what they are using and how it was made - if I recall.