You definitely seem to have something against Australia. Maybe you aren't the best person to offer advice on diving here.
Especially on the Great Barrier Reef, any guidelines and regulations are established by the GBR Marine Park Authority, which is an independent government agency and doesn't have anything jurisdiction over pretty much any other government agency in Australia.
Again, no different to any other government. There are hundreds of examples across the globe of different agencies operating under the same government that operate independently. Take a look within your own borders
If you feel like the feeding foreign processed food to marine life is in the best best interests of ecological balance, I'm more than happy for you to maintain your view of the GBR and stay away.
Thanks for your input.