Children/adults in care (people without families that can support them) might not be eligible for support for another year, and will often be expected to go out and work to support themselves. Poor families often rely on the extra financial support that ends with "finishing" education.
There are a lot of stories out there of children/young adults in exactly this situtation that should be off to skilled work training or university that might end up having their entire education wrecked over this despite being able academically. And this is all with the context that private school students often have not been subject to any "standardisation" process due to their small class sizes, or have had their awards upgraded above predicted grades.
We just need to give this year a free pass in much the same way as workers have been given a free pass with the furlough scheme. We can live with one year of inflated results.