SirSamuel, I would go beyond "missed opportunity" and call it a massive strategic error.
Watch the Tory response - they are not coming out and playing hardball with the unions at all. They are leaving them to screech about their members' safety while parents who want their children back at school watch nurses, cleaners, binmen, delivery drivers, shop assistants etc. go off and do their jobs.
They are leaving it to people like Steve Chalke and the Children's Commissioner (!!) to point out the harms to children. The Tories have read the room. This will be remembered the next time teachers have a pay or pensions dispute.
Teaching is s middle class profession with reasonable pay and a solid pension. And teachers are at home on full pay at no risk of redundancy. The optics of this are appalling.
I'm the daughter of a teacher and a former teacher. I have always supported teachers' industrial action and their unions' positions. But I am done with that now.
What I see is a profession entirely concerned with its own interests (chiefly being paid to do very little, in this case) and with no interest in the welfare of the children they are paid to care about.
I know too many teachers to imagine this is a majority view. I suspect we are back to silent majority territory. Only powerful heads can speak out on this publicly without fear of censure. But non-dementor teachers and heads are making quiet noises and just sorting out a safe return.