Framing this solely as fear is extremely disingenuous. Speaking only for myself: I'm not against the development of AI or LLMs in general. I'm against the trained models being used for profit with no credit or cut given to the humans who trained it, willing or unwilling.
It's not even a matter of "if you aren't the paying customer, you're the product" - massive swaths of text used to train AIs were scraped without permission from sources whose platforms never sought to profit from users' submissions, like AO3. Until this is righted (which is likely never, I admit, because the LLM owners have no incentive whatsoever to change this behavior), I refuse to work with any site that intends to use my work to train LLMs.