I’m afraid I agree with the former poster.
The focus now needs to be on resuming normal life as soon as possible, for all of our benefit (and actual normal life, not a post apocalyptic “new normal”). Whether that means being able to book train tickets to travel in the ordinary way, or simply socialising as usual in the local pub (or equivalent).
The priority now needs to be getting the economy going again.
We could have nearly ignored doing a lockdown at all and just socially distanced if people followed the 2m guidance as soon as it was brought in, they didn't do so leading to the rates of infection rising.
There are cases where people caught Covid-19 on Mother's Day because they went to see their families, when they were very much told not to, and so there were more cases than needed.
Technically if we socially distanced correctly then we could have got rid of the vast majority of new cases within a month. We could have then restarted the economy in the ways we are now taking about after a much shorter time.
If we'd started socially distancing as soon as China started building hospitals within a matter of days then we'd not have had the number of cases we saw, but people's half term holidays were too important.
We are where we are and the fact that people wanted life to be normal when it shouldn't have been is the very reason that the lockdown has been at long as it has been.
With that history, what is likely to be best for the economy? Staying with tighter restrictions for a few weeks or being too lax and then having to tighten everything back up again?
Someone made an interesting point, if this was something which harmed children as much as adults then chances are this would have been sorted by now as many more would be much more careful so that it didn't harm their children/grandchildren.