I believe that they aren’t banning all incandescents, however just the ones that are popular. A19 (the bulb you imagine when you imagine a bulb), R20, R30, maybe the reflector bulbs like par 20 and par 30. I can’t see them banning the low voltage halogens, like MR16.
Banning light bulbs is even older than Oz. The US has actually had some particularly inefficient bulbs banned since the early 1990’s.