Adi organisations, including Adi Bane Kebang-United, have expressed strong opposition to the Siang Upper Multipurpose Project. Local families claim that 80% of affected households are against the proposed dam. While some individuals have agreed to a pre-feasibility study, the majority remains opposed. The organisations accuse the government of violating tribal rights and encroaching on ancestral lands. They are demanding a public debate to discuss the project and its implications.