One bit of luck in this specific case is that we do have some relatively decent, relatively easy numbers. "Demand to know CRI & R9, and look for ones that are 80-100 in both, the higher the better" is doable for non-experts and not that far off together I think.
>But as far as actionable measures... I did put those in there. Incandescents, on dimmers, in evening spaces.
I don't consider that actionable myself frankly. Can be an option for "those who are really worried right now" sure, but I don't think most people are ever going back to this, and indeed even finding incandescents at all is going to become harder and harder. How many people have dimmers installed at all in general? How many know how to? How many will go to the effort, vs changing a light bulb? The energy savings and other advantages of LED-based lighting (particularly smart lighting) are too strong. If you present this as one-or-the-other, I think the vast majority are just going to write this off as the same category as various chemical hazards that don't seem like there is much individuals can do conveniently and is stressful to think about and thus people choose not to think about it.