I like the mr canucks grow. I use it a lot myself, I do find my plants never turn out the same as his and there is rumours he is doing other things to them and not documenting it. I can see in the background of most of his grows he has many other things hes adding into the mediums that he does not speak of like BSM and various bags of powder, I also find Gaia Green needs more magnesium or it gets issues. You are correct in guessing that it makes self pollinated fem seed, and its very similar to how people make fem seeds and fem pollen on a larger scale.
Besides that though. growing a plant out for it to produce seeds on its own is a waist of time to me. If you want seeds use silver and make fem pollen then pollinate another plant, it makes a fuck ton all at once not just a few. Stress nanners end of grow are not that potent in fertility from my understanding and seeds need 4 weeks min to mature on the plant, by that time your plant will have to much CBN it will be couch lock.
To make pollen for fems they use silver to block a plant hormone that allows it to become intersex and if the plant is originally fem its pollen will contain 99.9% fem genetics. If both parents are female the offspring is also female. where as male plants and female plants have a 50/50 chance of being male or female.
some say fem seeds are garbage because its not good genetics but for me growing small amounts out its perfect! I do not want to deal with culling half my tent do to them being males and useless to me. If i started a business then yea I'd deal with males and female reg seed, but that's not me. i'm not abreeder or really even a pollen chucker "amateur seed maker"
I have also done be own fem product and make seeds, and I have also grew out accidental self pollinated seeds from female plants and one was a male.
silver fem seed project
growdiaries.com/diaries/129779-grow-journal-by-m0use
Accidental fem seed where one was a male.
growdiaries.com/diaries/49742-dinafem-og-kush-autoflowering-grow-journal-by-m0use
Good Luck!