That was a real head scratcher for me too. I really think it was some kind of a virtue signal. He framed it in a way that evokes a kind of righteous indignation from people...like calling out the privilege of people who work from home when there are nurses who have no choice but to be at their workplace. I too tried to see the argument, but I just don't get it. I _can_ work from home and some people can't...therefore I ought to travel to some arbitrary place...for what exactly? As a show of solidarity with people who don't have a choice? I just don't get it...