Trying to apply any statistical analysis to this feels like such a waste of time. There are so many outside factors to consider. Even if you do some shit polls and find that "WFH is 10% worse on average" or "WFH is 17.8% better on average", using that information to make any decisions for yourself or your company would be insane.
The way this article tries to legitimise itself with it's shoddy use of statistics is just painful, I couldn't finish it.