Source: I’ve visited a home in Nairobi whose rent was in the order of $1,000 per year including bills, and housing 4 people.
I'm not arguing with you any more because you use phrases and terms like "grotesquely absurd", "near worthless", and "fantasy" which are all both hyperbolic and uncharitable. I'm not arguing that there isn't poverty in India and China, I'm arguing that though there is poverty, and some of it extreme, both countries are raising millions out of poverty annually. Only this month India announced the world's largest electrification scheme† to electrify the remaining population. And GDP PPP is a way to measure that change, economists agree on this to the best of my knowledge. I'm not taking your word for it, show me a source that disagrees.
Saying that extreme poverty in India is 20%, is grotesquely absurd. As recently as 2014, half of India's population (58%, or ~750 million people) was living on about $3 per day. Pretending that $1.25 is extreme poverty, but $3 per day isn't, is the obvious absurd part. That just demonstrates again how worthless PPP is. $3 per day is objective extreme poverty no matter how one attempts to hide from that fact.
I stated my reasons for why I believe PPP is worthless, numerous times over. Let's see you refute what I said. There are blatant objective economic lines involved in the standard of living gap between China and highly developed nations - which PPP as a fantasy attempts to ignore - and I listed several of them.