Lockdown is not happening to stop old people dying. It's frustrating this is still apparently misunderstood (or that it's being ignored for rhetorical purposes).
Lockdown is to stop hospitals becoming so full of people needing covid treatment that they can't treat any more people - for anything, not just covid - people of all ages.
Covid puts about 10% of people who test positive in hospital. Most of those people will survive, but only with that hospital treatment. Lots of them are under 70. We had over 60,000 people test positive yesterday. That means in 2-3 weeks potentially another 6000 people admitted to hospital from today's cases only. At the peak of the first wave we only had 21,000 people in hospital for covid on the highest day.
Stopping lockdown and letting cases keep rising to save education would not help the country in any way at all. It wouldn't just mean a few old people dying or whatever it is that formerbabe would be happy to have happen as an alternative to her children missing school. It would eventually mean bringing all kinds of healthcare to a halt for people of all ages.
It's possible she might still not care, and that she's willing to gamble that no one in her family would need healthcare, but surely at least it's obvious that arguments about average age of death are a red herring here?
www.newsweek.com/spiralling-covid-cases-are-overwhelming-hospitals-uk-1559673
I'm also not aware that anyone has suggested saying to children that it's OK, they could be in a war zone. It's those adults who are finding it hard not to catastrophise and who go round saying their children now have nothing in their lives, who in some cases might benefit from a bit more perspective. This is partly because being able to see those positives that are still in their children's lives, in amongst the very definite negatives, can actually help (and it doesn't mean pretending the negatives aren't there, either).