There is sharp increase of “India bad” news currently. Few years ago during their worst crackdown on Kashmir, western media completely ignored that, because US were using India against China. Even few months ago Biden went to India and explicitly told Modi US won’t talk about any Indian atrocities. But now India refused to get on board of US sanctions and warmongering, so are they being ditched? Maybe even consent is being manufactured for some sort of imperialist aggression, especially that Russia plan failed and China look more and more impossible?
What major purge of communists are you speaking of?
There are a lot of communists in India. If it became a full on proxy for the USA we would see some serious resistance.
Unfortunately communists have next to no power in the central government. They do not present any kind of threat that has an immediate need of purging.
I see this being said a lot but this is not true. There are a lot of communists in India, true, but this is just a consequence of the massive population. In relation to all the other political parties and groups, they account for barely 1% of the political power in the country.