I don’t understand your point, it makes perfect sense for ancient cultures to have spaces considered sacred around them.
Are you casually suggesting that a culture that has lived in an area far longer than anyone else doesn’t have the right to consider parts of the landscape around them sacred?
Just because the land was stolen from indigenous cultures doesn’t mean they don’t still rightfully have a claim on it. At a bare minimum they should be able to demand preservation of the sacred places among the land stolen from them.
If you want to come after “people trying to make everything into sacred spaces” or something, sure, let’s talk about the way churches can completely dodge taxes and other laws that the rest of us have to adhere to (at least in the US), why waste your breath saying “c’mon” about a devastated indigenous population protecting a beautiful and highly unusual natural feature?
As a last point, do you honestly NOT understand how this place or Everest or Niagra Falls or the Giants Causeway are sacred places? You don’t have to subscribe to spirituality of that culture or even believe in god at all to understand when a place is sacred. Do you look at a place like Niagra and think “meh, just another place who cares”? Do you think the tallest mountain in the world should have so many tourists shuffling along to climb to the top that the mountain is inundated with trash?
When an indigenous culture identifies a place as sacred, those are the people that know that land better than anyone else and have passed down a culture of stories born out of that landscape, we should listen.