That doesn't alter the fact that is is unbelievably horrible for families who have lost someone of course.
Yes, and it's especially awful for those families that they know that the government has not funded schools, and has made no effort whatsoever to stop airborne spread of the virus in schools.
When someone dies and there is nothing that could have been done that's one thing. When someone dies and it very well could be the case that they might not have done had they been able to wear PPE / if the school had rotas / if there was better ventilation and social distancing then that's a whole different story.
It's like if there was a workplace accident on a building site and someone died but all safety protocols had been followed - that's a tragedy - if that particular site told their workers it was optional whether to wear hard hats or actively discouraged it (even though other sites were all wearing hard hats) then that's clearly not the same thing.