How has the pandemic changed airport lounges?

What does that mean, exactly? On a recent visit to the Centurion lounge in San Francisco International Airport, I experienced a situation similar to the one Ein had at the Delta lounge. I had a 4 p.m. international flight. When I arrived at about 2 p.m., there were only a few empty seats in the lounge, and there was a line at the buffet. Some people had masked up, but many hadn’t. It felt as if this was a place to escape the airport employees and security officers constantly reminding travelers to wear a face covering.