The problem with hindsight on this is that if the lockdown worked, we won't really know. Sure educated guesses and predictions can be made but I think it's hard to truly prove out with data. Looking at other parts of the world with less stringent measures such as Sweden might be instructive but it's not necessarily a like to like comparison.What if the lockdown was all a big mistake?
I'm not saying it hasn't been a mistake, I just don't think there's a way to truly know.