Hi Rita.
I dont think I would eat many things as part of one of these TV shows, as I think thats just a modern version of the Roman Circus.
However, I think that trying dishes in different places of the globe is another matter entirely. A local dish from a place remote to home, a dish that has a tradition and the heritage behind those who make it, is something that is part of a culture that one is trying to learn about when one visits... (at least thats my thinking).
Its completely different when you are trying one of these local delicacies (even if they include some weird part of an animal), its in an entirely different context.
If I dont eat something that may be considered gross on a TV show, maybe I lose that part of the game... however, when you refuse to even try some local dishes in many places of the world, some locals find this very offensive. Luckily, this is hardly ever the case in Argentina (or South America in general), but in some Asian or African countries that Ive visited, dismissing local delicacies can be a huge paux-pas.