I've been trying out Kagi since the HN post from just under two weeks ago. Enjoying it so far.
The primary reason why I switched over is the argument "nothing is free". I am hoping that paying for a search service means they'll respect my privacy. I'm on a monthly plan so at the first whiff of controversy I'm out.
So far so good, but I'm keeping an eye on it.
And that's a good thing? That's 2020 Google, in all it's evil glory. That's just around when I switched to DDG.
Kagi has a free tier if you want to check it out.