1. It wasn't some massive drop in infection, it took months to drop down to this level and it was exactly as predicted by our data scientists as well as ones working in infectious disease control. If you have time listen to this explanation
link pretty much explains how and why. In countries like India where you don't have to worry about first amendment rights, you can enforce mask rules and handwashing rulers or else you get your arse whooped or kicked out and nobody would give a damn. That beside, just because we have a lot of people, doesn't mean the government can't reach them and they are getting infected in large numbers. There are random PCR tests conducted to see if the person is infected with the findings showing less than 1% +ve rate in most of the places barring two states.
2. We are a living example of it, your claim is nonsense.
Here's what WHO said on this claim. If you think it will go away in summer, believe me, it won't.
3. People over 50 are considered vulnerable. Also, there are people at all age groups with co-morbidities Diabetic, asthma, cancer and a variety of such diseases that's how 300+ million comes.
PPS: well obviously, but it is far more infectious. And densely populated countries will have quite a lot of cases.
It doesn't matter what education qualification Modi he doesn't watch every decision made, and our health minister is a doctor more than that an ENT surgeon final decisions were made under his supervision with the help of scientists heading the committee. I can understand your issue with Modi, but there should be common sense in the argument. And what should Modi do, he is a politician who holds a degree in political science you expect him to overrule scientists who gave the nod? Then we will have people complaining Modi is in the hands of Corporate Adar Poonwala, already he is in pockets of Ambani and Adani lol.