IMO both Morrison and the NSW Premier have contribiuted to the spread of the virus due to their past poor messaging.
In the past they led the people in NSW to believe that hard lockdowns were unnecessary because they maintained they had GOLD STANDARD CONTACT TRACING which would be adequate to control outbreaks. So the NSW population were conditioned to believe this and now many have not taken the lockdown restrictions seriously. They think they are immune from the need for hard lockdowns and that contact tracing would mean only small outbreak areas would be subject to limited restrictions.
In States like WA and SA the messaging was clear from the outset and compliance was very strong. Ironically the copped barbs from some in the LNP camp for the approach taken.
Whe a govt fails in its messaging and then resorts to blame the people then you know they have failed in their job and are pointing fingers in the wrong direction.