Indeed it is. Horses are livestock. We eat livestock.
I've had many occasions to enjoy horse meat, and it is very tasty. A horse meat pot roast is delicious.
It's just the cycle of life. One year you're winning the Triple-Crown, the next year you're on my dinner plate.
But they've got to develop a better marketing campaign. Maybe refer to it as filet de cheval (or filly de cheval, LOL).
I have heard that it is a common item in Europe..............