I give
@AliOop 2 thumbs for this sub for olive oil.
It isn't just about the FAs. Shelf-life (3 years for OO), unsaponifiables (OO and Avocado), good for dry/sensitive skin, the ability of OO to bring other oils into saponification, etc., comes into play.
FWIW, soapers tend to choose HO Sunflower, HO Canola or RBO as subs for OO in soap formulas. IMO and IME, for one reason or another, none of those 3 come close to what OO brings to the formula unless paired 50/50 with OO.
Early in my career,
@Bunny (Runs With Scissors LOL) was the "Queen of Castiles." From her, I learned that Almond Oil is the best sub for OO in Castiles. I've made both hard bars and liquid soap with 100% AO and am amazed at the positive result. Adding a bit of Avocado Oil to the mix makes perfect sense to me. I use both of those oils in leave-on products like my basic hand and body lotion for their skin-friendly beneficial qualities.