All this particular interest group is doing by going against good science is making is less likely they'll get what they want.
The world goes the way the most powerful choose it shall go. So it has ever been, and likely will continue to go for the foreseeable future. Going against the good things the powerful do is just one more very efficient way to get them to consider your desires irrelevant -- a really poor way of trying to get the powerful to use said power in your favor.
These people are not "natives", either. They didn't evolve there. They're immigrants and descendants of immigrants. just like all of us on the US mainland, basically anywhere but (probably) Africa. Perhaps what you meant to say was "descendents of the earliest known settlers." Or perhaps "invaders" is more accurate.
Another thought along the lines of the powerful do what the powerful want to do... do you think the earliest of these folks took the time to see if the other local life forms wanted them and their changes on and around these islands? Did the fish want to be speared, for instance?
It's all a matter of perspective and power. These people seem to have neither.