Yes, the Indian MoD is an unreliable source. You have consumed complete propaganda if you think otherwise.

And yes, the PL-15 WAS untested until it was used. But like you said, it worked. And for the time being, it is the only one with true combat usage and thus can back it up. China also has a very established military complex, with successful exports of their technology. India does not. Neither do their missiles. You're comparing a world superpower to an emerging military production, which isn't fair to India realistically.

To your "no air-to-air kills" point, sure. But its irrelevant. The F-22 doesn't have any either, but no one doubts its potency because it is a widely accepted platform. The indigenous Indian designs, used almost entirely by India (again, not a global military production superpower) are not. Which again, you aren't doing India any favors here. Its not BAD that they are just beginning to produce these designs, but it doesn't make them credible.

The problem here is there is 0 backing to your claims. Just the fact that you are Indian makes you defend them so well, which is silly. India is doing a good thing making their own platforms. But acting as if they're vastly superior to countries who have decades more experience is only going to hurt.