I'm not worried about attainment. My DS is really bright, we 'educate' him every moment he's awake, by surrounding him with knowledge, language, culture etc. Sure most parents on here are the same.
I grew up learning absolutely fuck all in primary school in the 1970s, my mum remembers it as 'Mr Men and dinosaurs'. I was clever because my parents are clever.
I'm worried about my DSs happiness, mental health, social development, physical health (he's putting on weight) and sense of self. His world has basically broken.
Obviously it's different for older kids who really need the specific teaching that parents can't provide, but my DS isn't at that stage yet.
And I'm worried about my own mental health and the future of my job if school goes part time. I'm barely hanging on as it is.
As for the many thousands of kids who don't grow up in an environment where education happens as part of daily life, they've been abandoned to rot haven't they.
Hell mend this government. I hope that this worst case plan never happens, but if it does we're creating a tipping point there will be no coming back from.