I can’t tell you whether any of these measures work, but they aren’t implemented for reasons of racist suppression, from what I can tell. Also no idea on the porn bans.
I’ve just moved to Australia, for the second time. The censorship you talk about is trivial and easily worked around (Video game didn’t get approved for sale? Order in from New Zealand or Hong Kong)
The populace isn’t so much OK with the policy as unaffected by it. These policies usually come from SA and are usually rooted in religion, which still seems to hold sway there.
The appeal of Aus to this Brit is that it has space, so much space, and sunshine. And it’s not as downright crazy as the USA (guns, employment rights, healthcare etc)