That's a great article.
I remember when I moved to Australia, I was stunned that there was no instruction in "Aboriginal". I had grown up in New Zealand, literally from my first week of primary school, with regular instruction in Maori - language, culture, mythology, local iwi history, all of it. And not in some urbane, sophisticated school, but just a regular little primary school in a semi-rural seaside town.
So when I was ten and arrived for my first day of school in Queensland, I was quite excited about learning "Aboriginal", not realising that there is a fantastic wealth of Aboriginal languages, rather than just one indigenous language as in New Zealand. I was baffled that there were no language lessons AT ALL, and that we wouldn't start on learning a second language (Japanese) until the next year in grade six. I never bought the excuse from some people that with such a range of Aboriginal languages, it was impossible to have a statewide curriculum - just teach the local language! Stop letting them be forgotten. Maori is fairly mainstream in New Zealand; the only time you see Aboriginal languages in Australia is in placenames that people poke fun at.
I regret not being able to continue with learning Maori. Now, most New Zealanders only speak English but they know snatches of Maori, and the country isn't as profoundly monolingual as Australia.