The pruning analogy is a good one. Flock management for quail is different than for other poultry and not enough people realize that before hatching eggs or buying straight run chicks. Death is not the worst of evils. It's much kinder than keeping males isolated or allowing them to tear each other apart IMO. Even rehoming them may end in disaster if the person taking them doesn't know what they're doing, or won't/doesn't know how to butcher humanely. I'd prefer to have more control over the process to make sure my birds are treated with care.
The desire not to cull is understandable, in fact I would be concerned if people weren't at least a little hesitant about it. My fiancƩ and I have discussed it at length, and despite euthanizing many animals in my career as a vet tech, I'm still really intimidated by the idea of butchering. I would if I had to (if a bird was suffering) but he is somewhat more confident because he has hunted. I am plenty comfortable cleaning & processing the birds after butcher since I did it for our falconer clients for many years. So we'll make a good team when the time comes.