I read the author's entire post and find it interesting that the author attributes success to having a good story to tell based upon some wild youth experiences while sailing. Not being able to type real fast, not some magic sauce from a "how to be an author class" but being able to spin a good yarn, one good enough for other people to pay to hear it.
There was/is a business position as a middleman of sitting between a storyteller and the printing press, called authoring or writing and that's slowly been denigrated for over a century by mechanical typewriters, word processors, spelling checkers, grammar checkers, now LLMs.
However there's always been a shortage of good story tellers with a story to tell, and for at least a century or two been a MASSIVE oversupply of the middlemen mentioned above, who end up failing. They can type, and they insist thats all they need, and the ability to spin a good yarn is just fluff or unimportant. Then they fail, so they're probably incorrect.
I suspect as long as the author can spin a heck of a good yarn based on his personal sailing experiences mixed in with whatever else, the author will have gainful employment in the book biz. As a storyteller. Not as "a guy who types really fast" or "a word processor technician" or whatever.
The middleman author who used to have a job writing generic romance novel #7994126 and was hoping to make money off writing #7994127 is probably utterly doomed. Why does the publisher need him if we have LLMs, or even better, why do we need publishers if we have LLMs and can enter a short simple plot just as well. "Claude generate me a 75K word romance novel similar to 'Just for the Summer' from last year but write all my favorite past characters into it. Especially character Anne she's my favorite."
But lets be realistic, those middlemen were already doomed anyway. Very few people in the book biz can spin a good yarn and that shows up in the stats of "failed writers". LLMs just mean they'll generate more scrap paper along the way to failure. But about the same percentage will sell books and about the same percentage will fail unless AI itself causes a substantial difference in readers tastes (honestly, I think not...)
Compare it to programming, about which we supposedly have more experience. LLMs generate more code that no one is responsible for nor understands fully. But does it make more or less successful startups? Nah, not really. Doesn't seem to have much effect on "idea people" at all. The people whom always generate bad ideas crash the plane with no survivors a little quicker, the people whom always generate good ideas make money a little quicker, most people in the middle are unaffected beyond change for the sake of change, which is always expensive.