I forgot that most of Palp’s dialog there comes from offscreen. I’ll have to add that to the bucket of potential ideas. Poe’s explanation is good enough as-is but I suppose it wouldn’t hurt if it sounds good enough.
I also love the D-O idea, mostly because we already decided that Palps wanting Rey alive from the beginning is not what makes sense. So currently in Ascendant, that scene only serves to tell us information that makes things more confusing. I do seem to remember that line coming from Finn on-screen though, so it would make matching things really difficult. But having Finn’s arc entirely focused on his new stormtrooper pals and Jannah is great. He can still be emotional support for Rey and everything, but it isn’t necessary for him to understand the full picture, at least.