Freedom is always snatched. It is never freely given. No amount of mediation will get the Kashmiris freedom, they will need to fight for this, gain a position of strength and then seek negotiations. It's still too early for this.
However, what is interesting here is that America is taking a position which I never expected the Trump administration to take. I dont think the Indians in their wildest dreams could imagine that the country they recently sold their sovereignty to would make such an offer which would benefit Pakistanis and Kashmiris but is detrimental to India's position on Kashmir. This is nothing less than a slap in the face for Indians.