Truth and reality don't matter to the Jai Hind mindset. Truth is bent, reality is denied. The problem with going about life this way is that it never allows one to properly understand the problems in the first place and denies them the solutions to overcome them. It's not simply a denial that PRC's seat at UN was not only done before India was a nation, it was done not at the behest of China. It's foolish to think China was the one desperate to join. In the early days, a permanent seat is often more a drawback than a benefit, it pushes a nation towards "cooperating" with forces that don't necessarily have its interests at mind. China could well leave the UNSC and given its seat to India then but no one considered India important or threatening enough to invite to the security council. If they want it now, they will use veto power to bother all its adversaries. China would just need to politically decouple from these horrid systems that are really there just for the top to exercise rule of their law over the more powerless. For China being asked to join, it was a means to have a formal communication with the country and exercise the combined pressure on it.
The misunderstanding of what a seat represents is actually quite humourous. I think Jai Hinds only consider it as some sort of privileged class which proves a nation "arriving". Nope. You can be the superpower and do what you want without being on the seat. It's a farce and a formality with minimal real work and maximum political gaming. It's not some country club membership that seems to be misinterpreted by those with warped and frankly worrying sense of classism.
A nation can work and cooperate with international forums etc without being even a member. There are various channels of genuinely productive cooperation and dialogue outside the UN which was a total farce and continues to be. UNSC veto power is abused by all sides of the political spectrum to serve their interests and the interests of their allies and vassals. No good work is done there, just cheap words by hollow people.