Hussar
Legend
I get the impression that some players who want ‘psionics’ to have Hindu flavor, do so because they want psionics to be weird (and exotic) and they think Hindus are weird (and exotic).
It seems a replay of ‘Asia is different’. So Samurai has to be different from Fighter.
The fact is, all humans have minds, and therefore, any human can be psionic.
Stop trying to remove peoples brain.
The alienation by means of the Far Realms seems a similar hostility against D&D players who want psionic characters.
Likewising reserving psionics for monsters only.
Psionics is a persons own mind. Nothing else. Human. (And other beings whose minds resemble human minds.)
You do realise that this is your personal interpretation of this and is not actually based on anything published for the D&D game over the past 40 years right? In 1e, using Psionics could summon extra planar creatures. So, it seems like the tie to Far Realms isn't quite so far fetched as that. Given that there wasn't any Far Realms back then, they instead tied it to demons and devils. And the chance wasn't exactly rare either. The chances were, over the long run, pretty darn good that if you used psionics, something big and extra planar was going to come and drag you down into Hell.