I hadn't realised that and wondered why there's a jump in the figures today.
This is a really tricky one. For people's mental health they need some interaction, otherwise we'll have a psychological and/or health crisis on our hands, if we haven't already. Staying at home, especially for elderly people could lead to a vicious cycle of self re-enforcing depression, to say nothing of issues for people with alzheimers or dementia.
But as you say, going out just makes the current situation worse.
From the point of view of the virus and public health, the answer is obvious, but from mental health it's much more difficult.