Multiple problems with you assertions.
A) Fahrenheit has an appropriate level of granularity for humans
You know that Celsius uses decimals for everything, so really not much difference. Furthermore the granularity of Fahrenheit doesn‘t have any advantages. You won‘t be able to feel wether its 70°F or 71°F outside, nor if you’ve got a fever of 101°F or 102°F. You need to look at a thermometer. And please don‘t reply saying that decimals are complicated. The majority of the planet, except certain Countries seem to manage just fine. Would be quite laughable if one certain country thinks it‘s too complicated.
B) Fahrenheit has an intuitive frame of reference for humans
Not really sure what you are referencing. I think it just stems from you growing up with Fahrenheit, so not feeling comfortable with anything else.
But Fahrenheit is the temperature scale of the proletariat, the working man, the average Joe. And I'm here for it.
I mean the “proletariat” of the majority of the world uses Celsius.
Well because it stands on a false promise. Neither 0°F = the freezing temperature of a solution of brine made from a mixture of water, ice, and ammonium chloride nor 100°F has any „real“ meaning. The other limit established was his best estimate of the average human body temperature, originally set at 90 °F, then 96 °F . How is that intuitive.
If you are refering to negative degrees, quite useful for telling how the weather is going to be. And to prevent the „negative numbers are hard“-Argument. It seems to work for the majority of people.
For the human bodytemperature argument often throw around: they are inconsiquential numbers in both systems.