I don't sell soap but I if I were to buy it I'd avoid palm oil and I don't make soap with it either. This is one of the many articles online about it.
It became such an issue there are certification organizations now for "sustainably sourced" palm oil, here's another article and video about that.
So if I had to use palm oil or palm kernel oil, I'd use the certified kind, but I'd just rather not deal with it all (in food too, but MUCH harder to avoid) and promote all the other oils and butters we can use. That's just my 2 cents.
*That's actually the only reason I even started making soap to begin with. I started to realize that so much soap out there has palm oil and animal fats and was hard to avoid, and the boutique-y one's that advertised soap without palm/animal oils tended to be so expensive. I started with boring non-colored, just lavender bars purely for personal use. But now I'm having all kinds of fun with it and giving them away as gifts!
*And for subs, palm has palmitic and oleic acids. Oleic is easy to get in other common oils. But palmitic was harder to find other than animal fats. Palm and animal fats seem to have similar acid content. The oil I found that's relatively common with some palmitic and oleic was cocoa butter. Still not as high as palm though. I wouldn't use it necessarily as a direct substitute for palm in a recipe, but I use it to up the palmitic acid in a recipe. I've learned that too much cocoa butter can make a brittle bar. There's some bizarre ones I've never used like Japan wax and Mafura butter that have higher palmitic acid levels. I'm a newbie so maybe someone else can chime in on my logic of acid content for palm sub?