Wasn’t it named after an actual doctor? I think the guy who funded it or something and the guy was trying to court the doctor’s daughter or whatever
“Is that Jackie chan?!?!”
“No, you’re just a racist”
It’s actually an acronym for the Democratic Republic of Pepper.
It was probably added just as a marketing tactic. There were fewer rules about being able to say anything was a medicine, and the use of Dr at the time was a way to trick people into thinking it was medicine.
I’ve never considered it’s a person… To me I only associate it as the name of the drink and never thought deeper about where it came from.
Same with Mr. Pibb, and that had the gender right in the name. I just, never thought about it.