

This is what their Privacy Pass extension is for. Once it verifies you as an user, it doles out a bunch of generic “arcade tokens”, which don’t have any identifying information. You lose Kagi’s personalization features while using them, but your searches aren’t tied to any account beyond just “Kagi”, so you and everybody else using the privacy extension are the same person.
At least, as I understand it.
My explanation is simpler: “The body learns how to fight diseases by eating killed viruses. A vaccine gives you dead viruses, so your body can learn without having to get hurt first. A measles party uses living viruses, so your kid might suffer death or worse.”
Then show them the results.
Probably not accurate in detail, but hopefully good enough. If not, then the brevity will let you move onto someone who hasn’t abandoned their brain.