I haven't suggested we should be locking down, just being cautious with mass events
I realise that, I wasn't suggesting you were, or indeed anyone, but this goes back to Mrex's point to actively avoid exposure risk for children seems fairly pointless to me which is that none of the countries, even those who are offering the vaccine to under 18's are putting any meaningful restrictions in to stop spread.
I think the stopping mass events simply doesn't do enough to make it worthwhile, simply delaying the infections, which is no longer a useful goal so long as healthcare capacity is good, which may even mean accelerating infection to avoid peaks of healthcare demand.