But isn't the real story here, that millions of people have improved their fitness, lost weight and now lead far healthier lifestyles because they are using fitness trackers to monitor their activity levels? Surely this is something to be celebrated not derided?
Taking this further, if millions of people are improving their health, then logically they are reducing the strain on our health services, at their own costs! Why is this not a good news story? Why is no one researching the positive impacts of these devices instead of working so hard to point out their flaws?
I would suggest that most users understand that a relatively cheap device (compared to a research lab full of technicians and expensive kit) is not going to be 100% accurate, that's not really the point. The point is that some feedback is better than none if it gets you up and moving.
We could wait until the devices get closer to 100% accuracy, but the devices that we have today are already helping people (witness the before and after photos regularly posted to social media) so why wait till then. Motivating people to adopt a healthier lifestyle is not easy and if these devices with their current flaws achieve that, then in my book that's a good thing.
Let's not kill a positive health trend by a continuous drip, drip of negative articles that seem to try to make users look foolish. In these days of various unhealthy lifestyle epidemics (diabetes and obesity to name but two), anything that helps people get motivated to help themselves is a personal and societal gain.
So no, Fitness Tracker users are not stupid, just maybe, more enlightened!