There will always be things humans can do that AI cannot. And if there ever comes a point when that's not the case, there will be no need to distinguish the two.
I'm leaning towards there being no causation between skin microbiome and wrinkles.
Did anyone in the study have botox? Crow's feet wrinkles are generally caused by two things: UV damage, and movement of facial muscles breaking down collagen. Which naturally tend to increase with age. So that's where I'd wager the causation is.
If a person uses factor 50 every day on their face and gets biyearly botox injections on their crow's feet area, they'll likely have no prominent wrinkles but they will still be old and with a greater skin microbiome.
>Share everything to the world, and let everyone make their own judgement based on what they see?
What's the alternative to this? They don't share all the information with the world and we're expected to believe their evaluation of the evidence?