It's obvious reading it that it was produced by AI. Phrases like, "Treasury's announcement gave the game away," which is also a sentence fragment, so the AI fails at even basic grammar (and shame on the WSJ editor for not noticing this too).

The irony is that although LLMs are trained on human writings, the output is conspicuously un-human. It's like after 4+ years and billions of dollars invested on SOTA models, AI is still incapable of producing natural-sounding writing. This should not be that hard, yet it is.