Some locations in Australia already had controls in place, such as requiring integrated water delivery systems and on tool dust extraction. PPE was a legal requirement on top of that. With all that it must have been decided it was still too dangerous, so I support the decision.
In another post about the same one of the comments was that despite the regulations workplace safety was bullshit and more people got sick. So the authorities decided it's simpler to ban the thing altogether than to try to force everyone to comply to the regulations.
Not sure if that's a good decision but it seems like the one with less casualties