South Delhi is expensive. I pay $1000/month on rent. That's also because I have a larg'ish space (home office, guest room etc.)

Living in tier 2 Indian cities or suburban areas can cut down the expense in half. ~$1000/month for a comfortable lifestyle.

I do not think so. Yes, it is ok if you are single but in India and earn 2k/mo, but remember everything is paid for and conditions are not very friendly. e.g. In Delhi you will most likely need a car (unless you WFH or live next to the office) and the fuel prices are among the highest in the world. You have to pay and save for your kids education (which can be pretty steep). Because of the heat and pollution, you have to invest in air-conditioning, air-purifier, water-purifier and the list keeps going on for a comfortable life. Also no health or social safety net means you have to maintain decent savings at all times.

Finally, the real inflation (not the official one) is high and any saving could potentially be worthless in a few years (except real-estate which is why it has absurd prices) which also means owning a home is quite hard.

He must be living like a king. I lived there for a year and struggled to spend more than $20 a day.

It must be, because I'm living comfortably in NY on less than $2000 a month post tax 0.o