Yes of course some of these measures need targeting, especially in big cities with many living in flats with limited capacity for staying at home with the kids in cramped accommodation. I am not sure how those in high rise flats manage to observe social distancing if they have to use lifts.
What was really bizarre is that after 2 months of having open borders we have now discovered that we must check visitors coming to UK. In fact the rest of the world will probably want to ban visitors coming from UK as posing extremely high risk of spreading the infection.