Cycling, steps and Healthkit

My iPhone 6 doesn't appear to be differentiating between cycling and walking as promised (http://www.theverge.com/2014/9/9/6127255/apples-new-motion-chip-can-tell-the-dif ference-between-cycling-and), I'm not in the least bit surprised at this because using previous pedometers such as a Fitbit couldn't tell the difference either, instead they relied on you manually telling an app that you were cycling now. I'm sure that the signal to noise ratio of cycling over walking makes it really difficult. My question is this:

Why have Apple not figured out that cycling and walking are mutually exclusive activities?

I track my cycling with the Strava app which has Healthkit integration and works perfectly. Unfortunately my iPhone also track my 'steps' while I'm riding my bike and these also appear in the Health app. The Health app does a good job of prioritising inputs for different data types so you can tell it to prefer a pedometer input over the phone's own M8 processor data. But why can't you tell it that if I'm recording a bike ride in one app I can't be walking at the same time? Seems obvious to me.

I tried manually deleting the steps my phone recorded for the time I was cycling but it took me about 10 minutes to delete every steps data entry for a 30 minute cycle and I now don't bother.

Anyone able to shed any light on this issue?