It’s very doubtful, yeah. We can’t add a million things to the site, because then we have to keep track of all of them, and there really aren’t enough people working on reviewing things for PG to do that frankly.
So one of our main goals is to promote organizations who are making privacy tools as accessible as possible, and that means not including people who are paywalling privacy while plenty of their competitors offer the same thing for free. 
Not that I dislike Kagi still, but paying for ad-free search is merely a convenience, not a privacy benefit.