https://en.wikipedia.org/wiki/History_of_Indigenous_Australi...
https://en.wikipedia.org/wiki/History_of_Indigenous_Australi...
Yes, the glorious Western civilization did the same pretty much everywhere, but Australian Aboriginal people's culture is unique due to their very long period of isolation - it's a gem and wonder worth studying and learning from. Yet, the Western instinct was to trample on and destroy it, systematically, irreversibly, just for the sake of it. Reading the Wiki page you linked some time back literally left me in tears. How could we. I don't even.
I'd like to add that it's never too late to try to preserve these cultures, traditions and languages. Getting interested to the ones of your place of residence, even if you're not from there originally, can be a great experience.
One of the best ways to do it is through singing and dancing (they go great together), and more generally, there are often chorals and various groups dedicated to these cultures, traditions and languages.
And indeed when you get into this kind of thing, you realize how much culture has been erased (in my case, the Occitan culture), but also you can see how much is left, and how important it is to preserve it.
It also helps a lot when reflecting on our own modern, imposed, culture, and realize that some of the things we think have always been there, have not.