The relatively unusual part is a post colonial government paying heed to indigenous beliefs via official channels ( ABC, the Australian Broadcasting Corp. ).
Taboos around naming or visualising the recently deceased are more common than many westerners might think
A taboo against naming the dead is a kind of word taboo whereby the name of a recently deceased person, and any other words similar to it in sound, may not be uttered. It is observed by peoples in many parts of the world, including the indigenous peoples of northern Australia, Siberia, Southern India, the Sahara, Subsaharan Africa, and the Americas.
https://www.creativespirits.info/aboriginalculture/people/mo...
It's certainly no weirder than pretending to eat bits of a god's son.
Addendum: For those interested, a language group map of Australia: https://mgnsw.org.au/wp-content/uploads/2019/01/map_col_high...