There's no magic and universal way to get an obedient dog. Every dog is different and every teaching experience is different.
If clicker training was the one and only method to train a dog, then this forum would not be necessary.
Who knows, maybe one day someone will find a better training method than clicker and people will say "clicker is such a cruel way to teach a dog, it makes them treat-oriented".
...Although I wouldn't be able to use a shock collar to train a dog, I believe that a tool, if used properly, will work.
Back to topic - I can only think that someone very frustrated and irresponsible would act that way.
I completely agree with you Raya!!
