The containment situation in Wuhan in the early stages cannot be compared to the situation in European countries or the US now, or even the situation in Wuhan now
In the early stages in Wuhan the virus only existed in Wuhan. A severe lockdown that eliminated the virus there would have eliminated it completely. Full stop. It would have been gone forever.
A draconian lockdown right now in e.g. the UK, or even a few weeks ago, might have eliminated the virus in the UK, but then it would just come back in again. We can’t seal the entire country permanently.
Even in Wuhan, they are easing the lockdown so soon the virus will get back into Wuhan again. It’s just a matter of time before they have another outbreak. It’s simply impossible that it won’t happen.
Lockdowns are important tools to slow the spread of the virus, they are a vital part of our response, but they can only slow it down. They cannot stop it or eliminate it. Also lockdowns are most effective the first time you do them, and then they’re the most effective in the first few weeks.
Impose a heavy lockdown too soon, and it’s like using up your most powerful ammunition before the enemy is in effective range of your weapons. Letting the enemy get closer might mean accepting casualties early on, but fewer casualties overall and a better chance of victory. It’s a hard, painful choice to have to take.