I noticed that some AI opponents still do not buy weapons.
Mainly the Abbot, the Emir.
Edit: Both need bows.
Ive tested it aswell. I agree that every AI has to be able to buy weapons.
Abbot is a special case though. He was never meant to have bows, he only relies on his Monks.
Most helpful comment
Fixed in 2.03
https://github.com/Sh0wdown/UnofficialCrusaderPatch/releases/tag/v2.03