I don't understand how this is 100% free, no subscriptions, no purchase, apparently no ads or tracking and yet I'm also the "customer" and not the product. What's the catch?
It seems fairly low effort (from a cost perspective) to deploy and maintain this feature, so I think it's a great way to get the Kagi name out there, which may perhaps lead to a few new users!
Sort of like a loss leader, eg the Costco hot dog :-)