DK may be head of indy-Sage rather than official Sage but is still a qualified and experienced scientist not some random person off the street!
The point about Zero Covid is not about preventing deaths from Covid at all costs - it's about being able to go back to normal, which is surely what everyone wants. Indy Sage argue that having tighter restrictions now is painful but makes economic sense in the long run because if Covid can be eradicated, we no longer need to worry about social distancing, masks etc, so businesses no longer need to limp along at quarter capacity or having to randomly shut down every few weeks. It's a nice idea, but not sure how it can be achieved if we keep our borders open - you can see in Australia right now what can happen if an infected person comes in, and they have a much stricter quarantine system than we do.
Infection rates have started going up in the UK but very slightly, so it would be difficult for the govt to justify another lockdown on this basis - even if they wanted to, which, juding by all the ads on TV encouraging everyone to go back to 'normal', they don't. Besides which, it is open for debate whether lockdown actually IS the best way to control infection. Maybe we could copy the Swedish model for a change.
Re schools, I hope they will open as normal though it's hard to say what will happen. So far relatively few countries have opened all schools fully post-covid so there isn't a lot of data to go on, but what there is seems encouraging - I don;t think anywhere in Europe has seen big outbreaks centred on schools.