All Buddhism is derived from India. But yes all countries have variations. There is no such thing as 'Thai' buddism and he specifically states it's Dhamma. My point re Yi Jing and Yarrow is that they have been used by Buddhists for centuries and monks were often fortune tellers in their communities
The core is from India, I agree in more than 100% but. Maybe Thailand is not a good example since they base on Theravada. Mahayana in China and Japan is totally different cup of tea. They changed Buddhism a lot and gave their own unique touches what is logical since cultures of China or Japan are not similiar in the slightest to the Indian culture. That's why in Chinese Mahayana is not a problem to use Yi Jing. I'm not sure about fortune-telling in India except being sure that they concentrate a lot on astrology and they're using it daily. Using Indian word like "dhamma" doesn't mean we're talking about Indian tradition per se. Most of the Buddhists around the world use it, Mahayana or Hinayana or Tantric or what else you can find. The same is with European buddhists. So the point is - it's not about Indian Buddhism, it's about Buddhism in general, as universal philosophy. It's not agenda about specific place but some ideas. And well, Theravada tradition is kinda hard because if you want to be a buddha, you should stay in the monastery.
"Dhamma" is not only about Buddhism, it's a kind of umbrella term for many traditions from India (by India I mean not only modern India but quite a lot of smaller and bigger countries around). "Dhamma" is pretty more than this what was said in the interview. And my favourite cultural barrier - in Far Eastern cultures based on Buddhism (or "Dhamma" in general), our talk would be pointless 'cause they're not fans of such classifications. They're a way more open about modifications, that's why Buddhism has so many different faces. Personally, I look at Buddhism as universal philosophy, just like Christianity or Islam are considered as universal religions. All those stopped to be in only one country or ethnic group, they spread around. So Buddhist from Thailand, China, India or Japan is a Buddhist, not thinking if it's from India or not. If we want to classify it so much, well, we should say that Buddhism is from Nepal