For someone highly literate, llms aren't going to help you write better. If you're borderline functionally illiterate (this is > 50% of the population according to some studies), I'm sure the llms are awesome.
I've long thought the same about all the hype around coding (plenty of examples from years ago now), but will continue to test the new models. They are improving.
In a way, I'm not worried about the LLMs per se as much as a kind of moral and ethical collapse. A debasement of the currency of communication, a market of intellectual-lemons.