I wonder if the lack of capital letters is a clever trick to make this whole annoucement look more humane and natural. Surely it's intentional: only "U.S" deserves capitals, not even his own name in the signature.
My initial gut reaction was "he can't even be bothered to use his shift-key while dramatically altering 4,000 people's lives?"
It's just too casual for what is happening.
The 2026 answer is that an AI wrote some parts.