Certainly the UK has laws which are designed to prevent both harassment and stalking. Yet we also have the specific right to photograph anything and anyone that can be seen from a public place. Not for us restrictions on photographing members of the public, celebrities, emergency workers, government buildings etc. All fair game if visible from a public place. I am given to understand that in some countries it is actually illegal to photograph police officers!
Honestly it bothers me not if people dress "sloppy". That's the moment as I experience it. I'm actually more likely to photograph scenes where people are dressed other than "average"....lots of suits or lots of jeans....or lots of short skirts....for example. A group of people in reasonably decent trousers and shirts is less interesting than the unusual.
Street photography at the moment is....unusual. I've taken a little Olympus Mju on my little walks to go shopping recently. What I am shooting is closed pubs, people queuing the required 2m apart outside shops, roundabouts that are usually teaming with cars standing almost devoid of traffic...signs reminding us to practice "social distancing"....my own little document of these weird times.