the point of the increase in detected caes is that if there is more etsting you will find more people infected. But increase testing doesn't put more people in hospital, those sick enough to be hospitalised would be anyway, and those who die would have anyway.
The higher tsting may show a higher percebtage of the opulatin contaminated but by the same token showe that a smaller proportin of the people with it are actually dying.
It doesn't change the death figures but it does inform scientists regarding percentages contaminatec and not getting a serious dose, which may inform lockdown easing decisions