Remember, the hermie is a trait that all plants have. It is the desire to reproduce and survive if there is an immanent doom approaching. Most plants can be forced to hermie by making them go past their "ripeness/harvest" window. This is nicknamed rhodelization because if the plant can go past full ripeness without hermie, or being forced into survival mode by some mechanism be it human or naturally presented to them, then it has proven to be stable. So growers, small and large, use this method to produce fem seeds.
But when human or natural dangers present, i.e. a hurricane blows through in september and drops a ton of hail or a grower screws up and sets the light timer to alternate 12/12 one day to 24/0 the next day every other day, then the plant may try to survive early. These plants are considered undesirable, but 50/50 (a number I have read thrown around so heresay it is) of the seeds may not carry on this undesirable trait. Plus seeds are very good for you by human consumption so there are benefits to seed making buds. We small growers may not find this desirable, but outdoor growers, or larger scale may not mind.
CS from what I understand causes a chemical inbalance preventing the female flowering from proceeding normally and induces male flowers. I do not think of this as the plant forcing the hermie trait. But the trait is there already if it is, encoded in the genetics, just as you and I but on somewhat different of a level.
Thats my understanding and 2 cents, enjoy!