I agree with your assessment of the research. But my point is that the linked article does not; it claims that the research used a suit which cools the particip

I agree with your assessment of the research. But my point is that the linked article does not; it claims that the research used a suit which cools the participants, which is not the case. It, unfortunately, uses an incorrect understanding of the research (a cooling suit) to support a more well-established, true statement (core temperature drops around sleep).