You are correct, Kagi current users are mostly from the remaining 1%. However that plan was made to attract the remaining 99% Internet users to Kagi (and the plan is more than sufficient for their needs).
I'm skeptical that those 99% would ever be interested in Kagi's value proposition at all. Kagi is a niche product in the contemporary context of ad funded free search engines, and it would have to survive until the other side of the adoption curve before it can reliably sell itself to the average person.