It suits the government narrative to blame individual behaviour for the problem rather than political decisions, social inequities, problems in healthcare and pure biology.
Can you really not that there are bigger problems - i.e Johnson saying schools are safe one day and literally the next closing them down, Sunak encouraging people to eat out to help out or Cummings saying it was ok for him to drive because he was testing his eyesight - than a woman on a bench, regardless of whether or not she was protesting.
Children have been largely responsible for spreading the virus in recent weeks through no fault of their own. The mutation likewise. Tax drivers, health and care workers, teachers, taxi drivers etc have all been expected and told to work. Compared to these one woman on a park bench in the open air is completely and totally irrelevant.
It's the same political agenda as going after benefit fraud (a tiny proportion of lost revenue) over and above tax avoiders or MPs fiddling their expenses for decades.
And as is evident on this thread, people love a vulnerable scapegoat. It stops them uniting to resist and change structural inequalities and unfairness.