That is incorrect - You can turn off Coterie discipline use completely in AoR.
The game has a bug where you can't save the settings in the AI Coterie controls. You have to toggle them back on every time you reload a game. This is true for both vanilla and aor, but at least aor includes better AI logic. There are a couple of AI Coterie controls that wont work with AoR; Quick Slots Only & Cast Special options don't have a function in AoR.
But you can use the Age of Redemption config app's options like turning off Complex Coterie AI, Hunting, and Resurrection in conjunction with some of the in-game AI Coterie Controls (mainly the No Auto Buff/Heal/Damage options). Combining all those will turn off coterie discipline use completely in the age of redemption mod.
Thanks for the reply. I'm gonna check this out in the next weeks!