I feel you OP, it was awful that so many schools didn't open back up to ask many children as they could have done before the summer holidays. And the blame does really lie with the government for ambiguous and weak guidelines. But now they are doing exactly what you want, and trying to reopen schools to all children, and encouraging parents to send their kid in. Not all parents do feel the same way as you, so those are the people this campaign is really aimed at, not you.
As for shoes, well, yes, it's a bit crap, but there are more important things to worry about, and I'm sure most schools will have a relaxed approach if you want to send them in with some other footwear for a while.