Im also old enough to remember entire males being norm. And come from a country where males are not desexed routinely. Where the dogs are all inside dogs and must have manners and training to be so, as there are at least 3 people living in a 2 up 2 down, often with a couple of dogs to boot, and not the small white fluffies either.
however, there were unwanted pups definately back then.
Group obedience training: bores the pants off me. And positive only methods? what a crock of shit! IMO. I have dogs that will walk all over you if you try that. Love, boundaries WITH consequences, exercise is what i need to train a dog. And the slowness of most obedience classes is not fast enough for my dogs, they get bored rapidly at training, that i never see when out alone.
Does mean i have to take them and socialise the heck out of them myself though, especially entire males. But as im a doggie person, who hangs with doggie people, that's easy.