Candelle
Writing as one whose is immune system is compromised, I am saddened by the lack of mask wearing in the general population. That, combined with the latest rules regarding movement if one is Covid positive (i.e. although there is a recommendation to stay at home, it is not a lawful requirement) has accounted for the enormous surge in Covid cases. I know almost twenty people currently ill with Covid.
Many people will not have the means to take lateral flow tests at £2.00 per person (four in a family, £8.00 a time) which means that rates will rise even further.
I know of Covid-positive people who have gone for walks etc., 'because they are allowed'.
I do not expect people to protect my every movement but the above means I cannot be sure that anyone I pass in the street or park will not be shedding the virus as they go. Without being too dramatic, it could kill but hey, they need their unmasked walk, don't they?
I don't think transmission in the fresh air and with good social distancing has ever been the main spreader behaviour, Candelle, and I do understand why people don't want to spoil their walk by not having the fresh air in their faces as they always have done until spring 2020.
In confined and crowded spaces it's obviously another matter.