For the same reason that bit makers donāt just make snaffles. Different animal personalities need different tools.
Yes, you can get e-collars that only buzz. And thatās not enough to break some dogās concentration, if thatās how youāre using it. Doesnāt mean youāre blasting the dogs on the highest setting just because you have it available.
On the āpunishmentā side of e-collar training, I look at it as similar to using a crop to install forward. You ask for the trot with your seat, your horse blows you off ā¦ you have two choices. Ask again, with emphasis from the crop, then go back to the quiet ask OR escalate your asks until you get a forward response, reward the response.
Some people use the first, some the second but in my experience that second one rarely produces a horse that moves well off the seat. Like it or not, we all offer āpunishmentsā when training our animals. For some sensitive dogs, it can be as simple as turning your back on them and refusing to engage. Others are the bull/china shop personalities and giving them a correction that they donāt blow off can be a finess game.