I think there are people who live alone and don't work and for them a trip out to the pub is their only social contact. These people often live in the kind of digs where you would want to spend the least amount of time possible.
It's very easy to judge if you are in a nice cosy house with your DP and DC, your home delivery of food and alcohol and your broadband and smart TV, we can face time our friends and many people can even work from home.
Social distancing is a lot easier for some people than others. Obviously none of us has the choice now, but a bit of compassion as to why particular people would keep going to the pub while they could.