If that comment is in reference to the thieves, I agree, but if it is in reference to the eating of horse meat, then I find it a little harsh.
Prior to WWII horse meat was not uncommon as a less expensive alternative to beef for many people. Many horses were used to tow farm machinery and cargo wagons, and this continued to some degree even into the mid-1950s. When they died or got to the end of their useful lives, they were often slaughtered. Something had to be done with the bodies. It was just part of the accepted life cycle.
The hooves generally went to the glue factories, the hides were turned into leather goods and the hair of the mane and tail were used to make horse hair products. Little went to waste. These were not pets, but working animals in most cases. Just as the ox and the dairy cattle were used for various products at the end of their service, so were horses.
I have eaten many different types of meat over the years, including beef, pork, chicken, turkey, pheasant, bison, venison, moose and even ostrich. I have also had horse meat once in my life that I remember.
It was in the late 50s and we were stationed on Prince Edward Island. A local farmer, who was an acquaintance of my father, had put down one of his horses and gave some of the meat to us. I remember it as somewhat like a tougher cut of beef, maybe a slightly stronger flavour, but not unpleasant, and definitely stringier than modern beef. I remember being curious, but certainly not shocked.
We forget with our modern supermarkets and complex distribution systems, like air transport, superhighways and refrigerated transport trucks, that at one time our food tended to be much more locally sourced. Which made choices, especially in colder climates in winter, much less abundant than today. You made use of what was available. No waste and conspicuous consumption like we have today!