Just because I posted something on reddit because I thought it was funny, doesn't implicitly give permission to anybody to take that post and profit from it. You're doing a disservice to consumers by acting like it's their fault for being exploited.
I disagree with you on whether it should count as being exploited. I don't see fanfiction writers professional impersonators or as inherently exploitative. I understand that some people would disagree because there is a difference in scale. But using technology to mimic and, in some sense, replace human effort is the reason it is useful.
I believe this will shift how and why people value organic media. The standard of what makes content "good" will rise in the long term. When stable diffusion first came out, I compared the generated art to the elevator music. I feel the same way about the output of LLMs. I might feel differently in a few years if models get better at the rate they currently have been, but that's not likely.
I agree that people should have more control over how their data is used, and I'd love to see this suit lead to stricter laws.