It's an old debate, a question of definition.
For me, it is more of a sport than for instance long distance running, where often only one percent of the field actually COMPETE, the rest just do it for fun or exercise.
At least chess is competitive, even at the lowest levels. You have an opponent, which to me is an integral part of sport.
What? Did you just make this up? What races are you going to?
I saw chess on British TV when Short played Kasparov for the PCA World Championship.
British TV also used to have a regular chess programme in the 1980s.
The TV programme was called the Master game and was introduced by Bill Hartson and If I remember rightly Ray Keene did the expert analysis.