This is a point I have made many times; Pakistani forces can't even see the Siachen glacier from their positions. India hold pretty much all the heights around it with Pakistan holding the lower positions sometimes perilously right under Indian positions. After the failed attack by the SSG in 1995, Pakistan has pretty much given up the ghost of trying to militarily win back positions. After the army made it clear that the political leadership will have complete responsibility if the PA does take positions vacated under any peace deal & that it will be militarily extremely tough ask to win back those, the government has pretty much stopped talking about the Siachen as a easy, low hanging fruit in talks with Pakistan. No real chance of withdrawal unless Pakistan agrees to mark actual ground positions something that they may not be willing to do since it will actually reveal the hollowness of their Siachen claims.