I could be wrong, but I think they're playing to their early adopter audience, that being tech workers.
Google is terrible at tech searches, without verbatim and now "web" search. Kagi spending work in this area, and indexing this area, might bear good fruit.
> "Heck, it even enables Kagi to exist!"
> "We’re grateful to have access to Google's search technology and infrastructure for Kagi."
So I wonder what the actual results mix is. Like I said, could be mainly from Google.
Edit: Added additional quote.