Fascinating. To be honest I'm surprised the declines aren't more significant. I guess it just goes to show how sedentary many of our lives already are xD
I'm going to make a wild bet that active FitBit users are not representative of the population on that matter, and will try to maintain a higher level of activity.
Fitbit users are probably more representative than Apple or Garmin users. Apple Watches are a lot more expensive, and Garmin markets more towards athletes.
I can tell you that while I am most of time at home and we shop as rarely as possible, I am exercising more then before. To keep sane and healthy. And we go outside every day when we see no one is there for the same reason.