Light leaks causing hermies is myth. Urban legend spread on the interweb and people bought in. Test after test has been done with light poisoning and stress and couldn't get a genetically stable plant to hermie no matter how hard we tried in a effort to feminize without colloidal silver.
Hermies are genetic and more abundant than ever today due to feminizing and repeatedly crossing the same hermie prone genetics. Today's popular hybrids are more prone to hermie than ever before.
You can grow his stuff side by side with other breeders with stable lines in the same space and only his stuff will hermie or be full on male.
His "grower error" schtick is to cause doubt in skills and throw blame to the growers.
I found his thread in the introductions
I'm super excited to be all set up at the new farm in Ocala, Florida. We are licensed to grow just seed here, but we'll certainly have our hands full. I've been at it since February, upgrading the greenhouse and setting up the pampered outdoor area. It's really a huge step in the right direction...
budbuilders.org