It's not remotely beautifully written. It reads as if someone prompted "Write an article called I Miss Terry Pratchett, and write it in his style."
It's full of attempted Pratchettisms that, if you're paying attention, make no sense.
It's on a blog where almost every post is about AI.
It's the opposite of Terry's warm, intelligent, humanist writing and an insult to his name.
I suppose in the AI era, we need to assume AI. For me, I feel like 'attempted Pratchettisms' might well be the result of a human writing. It's hard to be as good as Pratchett but understandable to write a post like this trying to be.
That is, with ambiguity, I try to assume the best. I expect that is somewhat naïve.
I genuinely read (and still do) the blog as a human voice. I don't think writing about AI is enough to assume that a blog is authored by AI.
If the AI-generated content doesn't push out all the good stuff, the absolute flood of accusing everything written everywhere as being written by AI will.