Depending on how many get it, the death toll among younger people would be devastating. We also have no idea what that toll, including from non covid, would be in a situation of exponential growth when even a and e will be closed.
It is odd how many medics are saying that the thing which most strikes them about this disease is how ill it makes young and fit people. Maybe in lower percentages but that adds up as case numbers grow. I also do value the lives of the old or unhealthy but that is a separate issue.
I don't think that choice is actually a big factor in govt thinking anyway.
If we didn't open up at all in the foreseeable future then we would probably be extending the economic damage beyond that which is inevitably caused by the disease itself. That's a major reason why they are already gearing up to make changes.
However, if measures are changed in a way that allows exponential growth of the virus to resume, then the results could be more damaging economically ( and to non Covid health issues). We would either see the devastating economic and health toll of exponential growth of the virus, or we would have a series of stop and start lockdowns. I do fear we might face those anyway but I hope not.
So for right now I don't think it's irresponsible to be trying to find ways to move forward with measures in place to try and hold down the infection rate. The govt are doing that though, they really do not need reminding of the economic impact. If restrictions are still in place it is probably because they think releasing them now will cause greater economic impact. But, they do need to be closely watched to see if they are competent in getting certain things in place to allow that opening up, PPE, testing etc.