... despite Kanta being dead.
An unwarranted assumption! She's survived for a long, long time; I'm sure she's been thought dead many times over the cycles. And even if that were the case, it's easy to imagine scenarios where it still results in increased HA.
TL;DR is "working as intended"
So, is there any way to remove the increase to HA with the exception of being nice? I don't particularly want to blow up all pirate-controlled worlds if somehow Kanta with her zombie ghost army of pirates will keep harassing me.
Also, yes, +2 from Kanta's wrath is absolutely irrelevant, but it's annoying, like a fly that keeps landing on you.