Is it really any better that this is happening in the "developing world"? You even make the case that it's identical to the practices we uphold to track animals.
Furthermore, appeal to authority is not proof or evidence of anything but the opinion of authority. Try to avoid doing that if you want to engage ideas in good faith.
Yes. You didn't read the article I posted, and you're already making assumptions to create a straw man.
The proposed research[1] (that Gates has been falsely linked to) proposes using quantum dots in a pattern. They need not be PII. A random person in a developing country would have no method or incentive to forge the quantum dots in their skin, so the pattern would be exactly the same on every person. Nothing personally identifiable.
The actual idea, which he doesn't particularly seem to be "pushing", is to have invisible tattoos injected into people in the developing world as an immutable vaccine record, not an ID. It's not unlike the way vets give dogs a small tattoo dot when the dog has been spayed. Medical records don't always survive or travel with patients.
1. https://www.politifact.com/factchecks/2020/apr/09/instagram-...