For me… I don’t want my search tied to my credit card. I go through lengths to keep my digital and analog domains as separate as possible.
Pay with Bitcoin [1].
If Kagi supported USDC I would definitely use it.
I’m not letting perfect be the enemy of good.
If what you mean is you don't believe they are not connected to your account, I can point you to the FAQ entry on their website.
https://help.kagi.com/kagi/faq/faq.html#what-data-does-kagi-...