I don't really want to defend the article.
My initial reading was that the author intended to imply that philisophizing about memories was a repeated thing in Pratchetts writings. Which - given my limited exposure - seemed plausible to me.
Good article? Definitely not. But I've also read similar try-hard / pseudo literary blog posts pre AI.
That's the exact problem: you wasted mental energy thinking about whether the author was implying that Pratchett was known for philosophizing on the role or memories and their similarity to furniture, when actually it was Claude spitting out a sentence that looked like the kind of thing Pratchett might have written.
Wasting time and mental energy is why this kind of thing upsets me so much.