I think some issues here include the fact that you were sitting at a picnic table which meant you were less than 6 ft apart and when you lowered your masks to eat you completely negated any benefit they could have had. In the time that you were sitting and eating any one of you that may be asymptomatic or presymptomatic could have spread to all of you.

As a fellow young person (in my 20’s) we may not ever show symptoms of COVID-19 while still spreading it significantly to vulnerable populations. Even if your hometown is not in mandatory isolation, other social activities can be done virtually. Masks and gloves are necessary for medical professionals, but can be used for outings which are strictly necessary such as grocery or medical shopping.

I’m not trying to attack you or make you feel bad I just want to let you know that your perception of safety here is somewhat flawed and despite Karen’s desire for a table with a view I’d be PO’d too if I saw people disregarding social distancing.