SunRa's strain wasn't one of mine. I haven't grown it, so can't really comment. I can say that only 5 to 10 % of plants will hermie from genetics. Interesting they found between 5 -10% hermies across all 3 strains. Implied in that finding is that ALL strains can be hermied. So max stability range for a commercial breeder is around 90-95% ( average). Chances are for every 100 plants of theirs you grow, you will experience approx 5 to 10 % hermies( average). But if you're getting significantly more than that, then it's environmental error. So yes a grower can also stress a plant to hermie. I have no idea about commercial test tolerances( for hermies in seeds), but I would be surprised if the industry doesn't tolerate 5 % hermies on average. As that's really the best that genetics have to offer us. If you have grown a plant that has hermied, it's statistically possible ( maybe not probable...lol) that the next 90 to 95 plants of the same strain you grow could be all stable. Just because you have grown a hermie plant, doesn't mean the strain is a shit strain. It may have passed a 95% stability rate in testing. You either just got unlucky to get one of the 5 percenters, OR you're a shit grower
Maybe try growing a single strain of that plant again and see what happens? Don't just blanket point a finger at a breeder for the odd hermie plant.