What I meant by my post was, of course, that many parents desire that come September, there will be no more isolations, no more bubbles and no more routine testing. There are plenty of parents, educators, scientists and policy makers who believe this to be thoroughly sensible. Certainly this is my wish and consider it to be in the best interests of children.
As I say, the fact that someone 'desires' something doesn't make it the right option.
It is already known that Delta infects close contacts who have been double vaccinated. It is also known that no CV or CEV under 12s will be vaccinated at all, and that even for the over-12s, a single vaccination is all there will have been time for before September, which is ineffective against Delta.
Even if the vast majority of parents have no interest in the danger to CEV children - and I do not believe that is the case, as there has always been extreme care taken by other children and parents of children who are vulnerable in their classes (both for Covid, and also for e.g. life-threatening allergies) - I do think that many would care if their teacher(s) are absent with Covid for a week-10 days at a time. Equally, many would care if their child brought Covid home with them, through sitting net to someone whose family were all ill, and this made the whole family ill including the elderly relative who lives with them.
i do think that the vast majority of parents will go 'On the one hand, I would love school to be exactly as normal, but on the other hand I can see the risks in that approach so am happy that the school still has some basic arrangements in place', and will be shocked to find that no, there will be no arrangements in place at all unless an individual head is willing to use health and safety law to protect their right to ensure the safety of their staff, pupils and community.