The creatives that are the loudest voices against AI for art asset generation in my experience are technically competent but lacking any real pizzazz or uniqueness that would set them apart from generated art, so they feel extremely threatened.

There's also been an extremely effective propaganda campaign by the major entertainment industry players to get creatives to come out against AI vocally. I'd like to see what percentage of those artists made the statement to try and curry favor with the money suits.

Without making a judgment call on quality, it is definitely established artists who rely largely on their technical ability for a living (and their hangers-on) who are most vocal. And they focus on the dual indignities of their style being easily-reproducible in aggregate, but also each individual work having glaring mistakes that they'd never make, while ignoring the actual point of theft - when model builders scraped their work specifically for use in a commercial product.

>There's also been an extremely effective propaganda campaign by the major entertainment industry players to get creatives to come out against AI vocally.

Where can I find out more about this?

Several of the major voices were Disney employees iirc. Disney's goal has always been to have a monopoly on "their" IP, AI applications included.