I wonder if there is some bloodwork or something that could prove/ disprove this hypothesis, haha. I don't care about the stimulation, I think coffee is legit healthy for you(as long as you don't add sugar). There is some evidence coming out suggesting the complex blend of chemicals in coffee might hold many beneficial compounds.
Why not find out? It would be awful if you went your whole life consuming something that didn't do what you that it was.