This.... Is actually a pretty good idea.

There's a few meme images around that Celsius is how water "feels" and Fahrenheit is how people feel (and Kelvin is how atoms feel), which isn't entirely off base....

But frankly, I would support human scale more than Fahrenheit. I live in a country with Celsius, and my only real gripe with it is that whole degrees are not very precise. You have to go to half-degrees, or even 1/10th of a degree to get reasonable precision on temperature.

Just seems like the human scale would work well for 90% of use cases, aside from science where we should be using either Celsius or Kelvin.