This is about Haleakala rather than Mauna Kea, but the arguments are similar. The only difference is that this involves the military. I believe this was in local newspapers, but they're behind paywalls.
"Space Force wants 7 new telescopes in Hawaii. Local residents say 'no'"
"The Department of the Air Force has proposed building up to seven new telescopes and an optics lab on the summit of Haleakala on the Hawaiian Island of Maui. The project, called the Air Force Maui Optical and Supercomputing Site Small Telescope Advanced Research (AMOS STAR) facility, would occupy about an acre of land near the Haleakalā Observatory. A series of three public scoping meetings about the project were held between May 13 -15, allowing community members to voice their concerns as an Environmental Impact Statement (EIS) is being drafted to outline how the project could impact its surrounding environment."
https://www.space.com/hawaii-residents-o...telescopes
"Space Force wants 7 new telescopes in Hawaii. Local residents say 'no'"
"The Department of the Air Force has proposed building up to seven new telescopes and an optics lab on the summit of Haleakala on the Hawaiian Island of Maui. The project, called the Air Force Maui Optical and Supercomputing Site Small Telescope Advanced Research (AMOS STAR) facility, would occupy about an acre of land near the Haleakalā Observatory. A series of three public scoping meetings about the project were held between May 13 -15, allowing community members to voice their concerns as an Environmental Impact Statement (EIS) is being drafted to outline how the project could impact its surrounding environment."
https://www.space.com/hawaii-residents-o...telescopes