The Andrew's government lockdown because they wanted to stop the spread as quick as possible they didn't want a situation like the second lockdown in 2020 where they were hesitant to lockdown straight away, which then ended up being 3 months of lockdown. The problem was lockdown fatigue/complacency was well and truly set in by lockdown 6. Combined with a more contagious strain, in hindsight lockdown was never going to work.