You make it sound so simple when its much more complex.
In fact there are MP's in the Coalition govt as well as MP's in the Liberals who are uncomfortable with aspects of the controversial bill, and it has already been amended at least 3 times diluting its original intent, dropping clauses which have been deemed too extreme.
"Scott Morrison's reassurance that the Bill would protect freedom of belief & expression, but stopped short of allowing discrimination against others, was disputed by some Coaltion MP's, with many expressing concern in Tuesdays party room meting about it's impact on minority groups."
Note, Coalition MP's let alone Equality advocates & others.
In all probability the bill will eventually get passed, in a watered down form, but Australian politics is an unusual sort of a beast.
https://www.theguardian.com/australi...imination-bill