It’s interesting to see just how interested our listeners are in China, Islam and the military; not so much in Indian specific topics, art or culture

May also be because for the Indian audience(if that forms a good chunk of the site/podcast demographics, along with South Asia) there are choices in the Podcast space. IVM Podcasts network and many others like them do a good job of providing information on similar topics(depth may vary but the domain is touched at least). There are also long running Indian History Podcasts (3 very famous ones) and so on.

China is covered less even in mainstream media (esp. that is from the perspective of the demographics here, i.e. South Asia) so the fascination and interest may be more. Though there is no specific shortage of China/East Asian specific podcasts in English medium, maybe they are too specific and less tied in with South Asia so less popular in the demographic concerned here.

Similar for Genetics, topics which are covered less traditionally, inquisitive people will naturally have a pull towards that. Even in mainstream space South Asia sees lots of debate/drama/traffic for Genetics stories. If anything this topic is even less mainstream or even niche for East Asians/China/SE Asia (very few if any famous Podcasts on this domain).

I’ve discovered the medium of technology profoundly influences the writing style

You should check out Reddit.