I agree, the wonder that one can enter a golden age when player with the same religion enter should also be modified then.
Good call, will adjust that too.
That's not how it usually works out as of 1.19, though. I've found that nearly all the non-Tactical AIs in my games switch to Clan Warfare as soon as they hit Riding (which they usually beeline), and then stick with it until they get Warrior Code with Chivalry.
I'll look into it. I don't recall if gave Clan Warfare some AI weight or not. If I did I should lower or remove it. The AI doesn't value Militia very highly, but I definitely don't want Clan Warfare being the default AI choice over Mercenaries or Vassalage (unless it's their favourite). It may get redesigned anyway.