"Many companies shifted to open office arrangements to get more collaboration. They ended up with people distracted from their work by continuous noise. So the workers plugged themselves into headphones in order to concentrate, withdrawing from conversation opportunities."

https://www.forbes.com/sites/billconerly/2022/11/16/how-to-get-employees-back-in-the-office/?sh=77970e56d75e

Actually...

It's no longer about the virus - remote workers simply don't want to return to the office