I understand his point and think it's an interesting observation, but honestly I disagree. What AI is great at is handling all the bullshit writing tasks that you have to do that no one reads or cares about. For example I got asked to write a blurb for a company newsletter recently. Told an LLM the things I needed to talk about and how long it should be, and the tone I was shooting for. Done in less than a few minutes. Previously that would have taken me at least an hour.
I am a professional writer (in the sense that I have published short stories that were paid for, even though it is a hobby). Recently, my wife was participating in an event where she had to portray an historical figure and she had a fact sheet and a couple of articles about the person (she wasn’t super famous). I used Perplexity with ChatGPT-4o and prompted it with all the materials we had and asked it to generate a 5 minute monologue in first person for the event. First draft was excellent, I touched up a few lines and printed it out. Done.