I think captive-bolt stunning is more humane than being boiled alive.
As I wrote, it's hard to criticize the consumption of dog meat while living in a country where hundreds of thousands of dogs are put down every year simply for not having a home. That said, when you see how dogs are treated prior to being slaughtered for meat, as in say the Yulin Festival, it's still disheartening, because they're packed together in cages, unable to move, surely starving because it would be impossible to feed them. In some instances even pets are stolen by dog meat vendors. I think this last is what led the People's Republic to finally ban dog meat consumption.