While this does appear to be a beta 4 bug (haven't checked beta 5 yet) I don't actually see the problem with this.
I quite like that HealthKit may track my gaming behaviour and tell me when I should be taking a break. At the same time, the data could be extremely useful to developers if targeted collection of that HealthKit data is picked at specific points or fluctuations. It may help them improve the games design, setting, impact, music etc
Data is a good thing, at a standardised and anonymised level. If I suddenly started receiving emails about ways to improve my health from marketing companies I'd be slightly more annoyed, but a games company making me enjoy a game more... that's a win in my book.