Lol. Good question. But that’s the way these NFL teams operate. Any slight advantage they’ll try to take it. Real or perceived.
I will say, having lived in south Florida and currently living in the South, the humidity is a real thing. Nothing like those summers and falls I remember living in NYS. I think when the Dolphins did their stadium renovation, they designed it so the opposing team is in the sun during the game while their side is shaded. That combined with the humidity and dark jerseys probably has some effect on certain players. Not sure how much though.