That breeder doesn't understand how to identify traits. So, I have a male with tremendous structure, this is why I selected it. The goal is to take some plants that are stretchier and try to introduce better structure. If I make seeds from the male, but never run the seeds from it, then yes, it is a useless male.
But if I plant those seeds and find a phenotype with the same structure, but
terpenes from the mother, I can then continue to work that line knowing what the male can bring. This is why breeding works best when you can run numbers but also when you know one of the plants really well. Typically, I've been more familiar with the female and I like working that way. Anything Jack with a strong lemon smell typically passes that trait on. It's about dominant and recessive traits and how they combine. Same process of how they reduced flowering times in a lot of plants.