Absolutely. My spouse looks at me like I’m crazy for putting black blankets on the floor in front of all the south-facing windows, but it’s a noticeable difference in those rooms. I also keep the leftover pasta and kettle water out until it’s cooled down instead of dumping hot water down the drain. Helps to avoid running the humidifier too.
Maybe they’ve never seen the original? It is a bit deep fried here, but that would still make me feel old.