The problem here is that in certain places we may find ourselves in a situation where schools are closed due to staffing shortages (due to isolation or child care problems) combined with actual positive cases in the school closing bubbles and they may not be able to open due to the sheer number of cases in the area.
This causes knock on effects because school closures result in vulnerable children being completely out of school unlike earlier in the year and keyworker children not being in school when they have had no contact with a positive case.
To give a few numbers on this.
The Liverpool Echo reported the week before last that 199 out of 200 school in the city area of Liverpool had been affected by some sort of closure. The Manchester Evening News has reported that one Yr10 group in a G Manchester school is on its third two week isolation since the start of term. My understanding of the situation is it is particularly acute in certain hotspots already and combined with issues at the hospitals this is a problem.
Liverpool City Hospital NHS Trust was reporting last week that staff absence was running at 7% because of staff isolating and having to stay home with children isolating.
So it looks like there is a problem with how the school closures are affecting the NHS which does beg the question of whether you need to switch back to the April System in order to ensure that key worker children are in smaller groups sizes less likely to be impacted by isolation issues in areas where there is a big hotspot and the NHS is struggling.
The fact that there is strategic planning to close schools suggests its under consideration.
There was also an article in the Guardian the other day in which the headline was that some schools have had 80% of their laptop for deprived children slashed. That sounds awful, but buried in the article was the point that areas with a high number of cases were being prioritised. That suggests to me theres a shortage of laptops overall and there is preparation for immenent closures to occur in certain places so those schools can't wait for laptops whereas other schools will have to.
So national school closures are unlikely to be on the cards. But we are going to get a possible Tier 4 level of restrictions which includes school closures in the weeks and months ahead.
Whilst the guy in the OP might be discredited, i do have to say whats happening at local level in some places and what the government appear to be quietly doing suggests to me that it is on the cards and is being seriously considered as a way to help drop rates much more quickly than T3 restrictions can do.
Indeed SAGE have said that in some areas T3 restrictions will be insufficient to drop the R below 1. So are T3 restrictions really where things are going to end before winter is out?