does adding the copyright/license information do anything?
Not a lawyer, but I’d be sore amazed if “your honor, he copy/pasted my Lemmy comment” flies in court, regardless of your copyright status. The same goes for those AI use notices–they’re a nice feel-good statement, but the scrapers won’t care, and good luck (a) proving they scraped your comment, (b) proving they made money on it, and © getting a single red dime for your troubles.
They’re definitely better entertainment pound-for-pound. I’d contend that the book gives you a lot more to think about, so it really depends what you’re after. I like them both a lot–I think they complement each other very nicely.