I'm a happy subscriber, and it's certainly a big improvement over Google search. But the internet just isn't the same place it was five years ago. And as search results (for non-navigational queries) are becoming less useful by the day, I find myself asking AI to do it for me more.
There's a lot to like about Kagi, but they'll probably have to reinvent themselves if they want to grow beyond the niche that high level internet search will probably become.