Actually, they're one of my best clients.
speed things up and cut costs.
Well if that isn't the definition of amazing client than I don't know ;- )
Anyway, AI for this question can be replaced by any tool or technique, it's somewhat a red herring in my opinion.
The crux seems to be client unwilling to listen to authority, which should be you. It's communication and trust issue, everlasting problem in any relationship, business or otherwise.
I personally wouldn't want client telling me what and how to do, he came to me for that expertise. But if he would have more expertise than me, than I would be a poor fit.
Usually just one of those can apply at same time for given topic. It's up to you to decode whether your client is just micromanaging AI-hype obssesed dreamer, or whether you need to pick up the slack and integrate wider AI skillset (if that's what you want to).
But this seems to be an odd relationship. And I don't think AI is the issue.