I see no numbers on how many people were treated on either of the first two links, and certainly don't intend to comb through the dross on the third link. So do you actually have a number? It doesn't need to be exact, just a credible source on the order of magnitude will be enough. Are we talking a thousand, a million, or a billion here?

To reduce R by a factor of 2 by the use of a prophylactic drug, you'd need to have half of the population on a regime of the drug. It seems pretty obvious that did not happen if this kind of reporting is the most impactful there is. Just think of the logistics of trying to do that! India has a population of 1.4 billion.

On the other hand, if they only gave the snakeoil to e.g. a single digit number of millions of people the reduction in the number of infections would be imperceptible.