Please, be patient with my question
I already read that there is a heuristic that makes superposition a fact of reality. In addition, this superposition, when observed, it has a state of 0 or 1. Furthermore, quantum programming is done on our workstation and executed on remote quantum hardware. Finally, the use of Hadamard gates was able to create a superposition. Therefore, I'm curious to know if the superposition really is real or is it an assumption?
Edit note: I started this question with Toffoli. However, my question is about Hadamard gate.