If we are looking at this issue from a historical and legal perspective, there should be none. Under the rule of Kamehameha II, the Kapu system was officially abolished, along with the abandoning the worship of all pre-European contact religious deities, and the adoption of Christianity as the unofficial State religion. Although the Kingdom of Hawaii allowed the freedom of religion, most Hawaiians like myself, have since adopted the Christian faith. In the last 20 years or so, however, there has been more Hawaiians who have seem to convert back to worshiping our ancient deities of the past.
As to the question as to how many Hawaiians actually think the mauna is sacred, I am sure those who have begun practicing our ancient religions, the mauna is very sacred to them. However, I would argue the majority of us view the mountain with the same respect as most people would see the Notre-Dame Cathedral.
I'm not going to insult anybody by insisting that an island that has only been invaded and occupied
for the last 800 years is "ancient".
Ancient is Egyptian old Kingdom!
Another perspective is 13,000 years ago there were no people in the Americas.
Who owns the place now?
People that speak French, Portuguese, Spanish, and English.
In Hawaii what languages are spoken? Regularly
at home. I can understand some Filipino, Spanish, Chinese,
and Japanese words if you don't talk too fast, but maybe only four
Hawaiian words.
That is who won.