I'm not trying to answer your question as I don't know the full extent of this new law, but based purely on the article it's not hard to imagine the AU government can construct a case against a politically subversive but otherwise innocent person by planting illegal data/content on their cloud storage and social media accounts. The fact that they can do this with zero judicial oversight mean that it's not a question of "if" this will happen but "when".
'Data disruption warrant: gives the police the ability to "disrupt data" by modifying, copying, adding, or deleting it.'
What does it really mean? Can they now legally change what website says to me? Intercept and change what signal message says?
I am genuinely trying to understand what functionality hides behind this broad language.