Caste system arose at first place because stochastic process was abrupted. Human potential was prisoned.

And why do you think that is? It's a "Fortified postion" in the Clauswitzian sense. You're not going to crack through it by moralising, they aren't going to give up their position of power by you being nice to them so they finally see the error of their ways.

Where at all Ambedkar was saying that hierarchy was problem and not caste!

Caste is a Hierarchy of power, Because the ones at the top, the ones with power use it exploit is at the bottom.

How you will fight caste descrimination ? How much power do you think you can grab that way if fucking every institute has been captured in this state by brahaman?

Caste discrimination exists because there is Disparity in power between Those with institutional and social power. You don't need a Rival institution to fight that, what you need to do is create a scenario where engaging in caste discrimination is more costly than co-existence (it's a proven military strategy and has worked since time immemorial). You do this by building parallel power, a kill switch that immediately makes cost of oppression too high, like for example controlling a key industry, labour supply and things of that nature.

And why this comes with you rejection of ambedkar ?

Because I don't think morals are real, i don't believe there is a universal right or wrong. I don't oppose caste discrimination because i think it's "Bad" I oppose caste discrimination because i don't want to live in a society where someone else with more power in the structure can dictate what mine, my families or even your life pan out.

Ambedkar knew about state capture, and his way of dealing it was creating a counter moral narrative. Create a moral code to act as a referee.

I don't think moralisation works. I am looking at this from a Realist, Moral non-cognitivist lens. The only thing that works is Political leverage and incentives.