While this is true, it's one part of Kagi that I wouldn't expect to remain true if they every actually got mainstream success. That human/less corporate feel is less an effect of their mission goals than it is their very small size.

They may never become huge (they are explicitly building their business model such that it doesn't require growth to succeed), but if they ever do, they will be able to maintain their mission and goals, but they almost certainly won't be able to maintain that small, human feel.