I’m not saying you are wrong - you are probably right and I am wrong - I just want to understand why.
With that preface made, a hermie is for lack of a better description a mix of male and female parts… typically it is a female that is triggered (genetically or through environmental stressors) to develop male parts for the purpose of self-pollination. I get the sense there is a difference between intersex and hermaphrodite (intersex being more of a human thing) but I am not knowledgeable enough to say what that is. If these plants have no male genetic material at all carrying the blueprints for ‘male-ness’ how can they develop male parts? To stress again, I am not a genetics person I am interested in understanding why it is the way it is. Essentially, what do the chromosomes of a hermaphrodite plant look like and how can they generate male parts without any male genetic material? A very quick search didn’t reveal anything definitive but I get the sense that the genetic makeup of dioecious plants (to distinguish between plants that have a gender and those that are always both genders) isn’t quite as simple as just male or just female genetics. I would be very interested in the science behind how this works (because that is the kind of nerd I am 🙂).