Even the article though doesn't actually say a lockdown to be fair.
We complied I think @NannyAndJohn for reasons that I am not sure exist anymore.
The first one through fear of the unknown and to gather information
The second/third ones to get vaccinations in.
What would this one achieve. If we look at NSW you can see the effect it is having there
The article itself is all about the potential for different measures.
I do agree though that getting the timing right is crucial - I disagree that it is right to do it now. We have so far managed each stage with an increase that goes down - Scotland have another week or so I think to see what happens although there schools and restrictions went at the same time.
Contigency plans are needed actually for that sort of timing as it would make sense to see what happens. 3-4 weeks is needed to see what happens.