I suggest you leave the AI out of the arguments about the strength of a civic.
Either the civic is too strong then it is right that the AI is using it often but then the only thing that matters is that the civic is too strong and needs to be nerfed.
If the AI is using it too often despite that the civic is not overpowered then the code for the AI needs to be changed and not the civic.
In short: The AI should only impact balance decisions in cases where it is too difficult to get the AI to use a mechanic correctly.
I 100% agree with (and more broadly than just for civics).
On the specifics of what you propose for pacifism. Ask yourself if you'd still use it. I wouldn't - I think you went too far. The driving reason for using pacifism (IMO) is the GP booster, and by nerfing from 100 to 25 it's past the point where the downsides are not much more significant. I would say 50. I also agree with you that WW should be extraoridinarily high with this civic.