> I don't think it is AI, but I bet it has been through editing/review to match a corporate style. LLMs were trained on this.

My standard reply to claims like this is: post a pre-2022 link with an LLM style that matches your claims.

Usually people claim "LLMs sound like the way they do because that's how people write". Your claim is only a little different: "LLMs sound like the way they do because that's how corporate writes".

You may be correct, but I'd still like to see a pre-2022 link confirming this.