I think there's now two distinct camps, there's the "we're all going to die" unless we lockdown everything indefinitely until this thing we don't understand goes away; or there's the "let's try to manage this, study this, and mitigate based on evidence". The first one likely crushes all economies which requires picking up from the bootstraps during which time isolation for many becomes a definite death sentence, and the second one damages the economy to a low level of activity but infrastructure and personnel can provide some service levels, susceptible people die early, but life goes on as normally as possible until a vaccine is available.
Of course if you are a lockdown advocate you will presumably break off all contacts and prepare yourself accordingly. That could be tricky now, as any trip outside, say a supermarket shop, could put you in contact with a carrier. Also this virus may have (likely was) been in country long before we even knew it so prepping was required months ago.
The current advice for key workers to continue and all others to self isolate as directed to minimise disruption seems to me a better judgment call.
There will be casualties either way.