This presumes the "style" is unique. It probably is, but it's also influenced by what was already out there.

The idea of a specific artist having a unique style they learn is dying right now: the faster and cheaper way to develop a style will be to train an AI model on public domain work, and tweak till you get something you like. Then use it as part of a process to go from sketch and composition to output. If you must, play with your own style and make a custom model - that technology has gotten very accessible very quickly.

This is a gnashing of teeth over an unexpected price shock: creatives have been feeling pretty assured that automation wasn't coming for their revenue because what they did was a unique human endeavor that a soulless machine could not possibly threaten. It was meant to be factory workers and retail staff first.

People aren't worried about copyright. People are worried that a skillset acquired at substantial sacrifice is about to become irrelevant and are desperately latching on to any perceived lifeline.