What makes 0°F (-17,7°C) special for a human body? Is it the limit after which we don’t feel any colder? No.
And what makes 100°F (37,7°C) special? Maybe we can’t feel any hotter? No, we can. Is it the body temperature? No. What is it?
Maybe 50°F (10°C) is perfect? Nah, cold!
If we change 0°F to, say, 0°C and 100°F to 40°C, does it change the notion that 0°F is very cold for a human body and that 100°F is very hot? No, and as a bonus you get 50°F equaling that perfect 20°C.
Fahrenheit scale is super arbitrary and it’s hilarious when it is posed as a “human-centric” scale. At the same time, the concept of Fahrenheit scale is unnecessarily complicated and the notion between Celsius is extremely clear - you can easily calibrate Celsius thermometer with nothing but kettle and freezer, right at home, right now.