I'll give my input here. I have been growing a strain that was gifted to me, for the last couple of grows. My friend has also been growing the same strain, cloned from the same mother.
I treat my plants well, my environment is good, and I follow a decent feeding schedule. My friend has a habit of burning colas, overnuting, generally treating the plants like shit, and his temps and humidity are usually too high.
His last two harvests have been seeded badly. My last two harvests have been 100% seed free. The plant genetics are the same, and the only difference is how they have been treated.
I have had true hermies in the past when growing from bagseed, and they are pretty obvious. They will show whether there is stress or not. What I am describing here is more like an intersex response to stress, and in my mind is a completely seperate thing. Not all plants will ellicit this response, but many will.
Does this mean that the plant was a hermie anyway? It's very possible that it has a dormant hermie gene or something that is activated by stress. I just know that under the right conditions, it was quite happy to be a pure female, but when tortured, it threw out balls.
Not trying to pick sides in an argument here, just giving a bit of first-hand experience.