I think this is petty and sad behavior from the CEO of a company and I think this is a man that does not understand boundaries at ALL.
And you know what I truly believe? I already thought this before based on seeing his responses to feedback, but I believe it a thousand times more now that I've been on the receiving end: I think it genuinely eats him alive that someone doesn't agree with him or doesn't think he's doing great work, and he also truly believes that if he can just keep explaining himself to them they'll OBVIOUSLY see it his way. He cannot accept that someone might think Kagi sucks, to the point where he has to reach out to someone like me to try to argue them into Thinking Correctly.
Anyway, unless I get anything else in my inbox that's it, but I think it's such absolutely unhinged behavior that people should know about it. I don't want to hear a single other fucker tell me "but the search is good!" Use that line on literally anyone else but me, no other search CEO has shown up in my email inbox to mansplain their company to me.