Re: Fitness Fad
"Or are such features akin to gyms offering cheap deals in January for 12-month memberships, knowing it makes them money but will never be used?"
Broadly speaking yes. A committee will have sat down and been bored through a Powerpoint presentation on many global meta-trends, one or two of which will be "ageing fat white people", albeit under a hip and reasonably polite scenario name, like "Silver sloths".
Since interfering halfwit politicians will try and interfere if makers really offered what this market wanted, it probably isn't acceptable to offer discount deals with McDonalds (1) nor to offer free Alzheimer's Help Apps (2). And in marketing terms you might find too many in the target market believe themselves to be lithe fitness-freaks-in-waiting, and therefore to be put off by the straplines suggested below. The next best thing is therefore to appeal to lost youth and fitness, and the human inclination to put off till tomorrow what could be done today, foolishly believing that the same thinking will not apply tomorrow. Hence dubiously reliable blood pressure monitoring, fitness apps and training schedules.
1) "20% off when you supersize your meal and pay using Samsung NFC, and auto delete any salad options!"
2) "Press the big button in the middle of the screen (marked "press me") to be reminded who you are, where you live, and what medication you forgot to take today!"