The bit that’s really identifying, assuming the piece is 100% true, is the direct quote half way down it
If that’s an accurate report of a real conversation, then presumably whoever’s quoted knows who they said it to. And so has a fairly good idea who the writer is.
Of course, they probably aren’t telling either.
Yes, there are subtle subconscious language choices that *can be *deeply predictable to machine learning techniques, and give away authorship. But I’m wholly sceptical that in a few-hundred-word op-ed that a bunch of editors have had their fingers all over, you’ll get enough data to be 100% sure of any culprit.