I'm not sure that your assertion is correct. Employers are required to pay money into a super fund of your choice (or an employer default if you don't specify).
You can of course contribute privately to this balance as well, and in fact in some cases the government has matched contributions.
Super is not taxed*, though you can't withdraw till you're over 60.
It does have a lot of flexibility as well. It's possible to set up a 'Self Managed Super Fund' which can be used to buy property, or invest in other ways (though this is fairly tightly regulated).
This is of course not connected to the availability of a pension, should that money ever run out. Which makes it all feel pretty far left.