It's not anti AI, as many other comments point out it's simply heterogeneous enough that it's mostly the "theme" of a discussion dictating which subgroup will be more vocal in a discussion.

In any case I think that some in the anti-AI crowd are simply very defensive.

They have staked all of their careers on the technical part and skills of writing code. Now that they see the average developer (which study indicates can barely write a fizz buzz) outputting software at a great velocity they have a mixture of disgust for the (alleged) low quality of the software and fear for their own careers.