I had an American explain “well you just know that 68 is long sleeve warm, 80 is shorts” or something, as if people cannot memorize that 18 is chilly and 21/22 is usual room temperature, 26 is shorts.
The only thing I dislike like about Celsius is that my thermostat supports both, but doesn’t allow half degrees Celsius, so it provides less granular control in Celsius than if you set it to Fahrenheit.