No one I've ever heard/read is claiming intelligence itself is harmful. You should delete that idea from your brain and stop responding to it.

> One could also argue that bio/cyber adversarial games are qualitatively different from all past adversarial games

No, one doesn't need to argue that they're different from all past adversarial games. You're a victim of survivorship bias. The games that people like to play and allow to be played are ones that equilibriate. That does not mean that all adversarial games have this feature.

There are an infinite number of games that do not equilibriate. It is incumbent upon you to demonstrate why the AI arms race is one that does.