Biking is also pretty dependent on the individual and their setup. The elevation changes, distances, sustained speed, and terrain one individual and their equipment can handle can vary drastically with another person. Not to mention someone’s tolerance for whatever the weather might be doing at the time while you’re completely exposed to the elements on a bike or walking.

It’s just them taking a “your results may vary” approach while covering their own ass.

Anecdotally, while driving in Colorado, I put in a destination that I was driving to in bike mode on accident. The destination was like 80 miles away from where I was and involved climbing and descending a mountain pass. Google Maps was very optimistic about how long it would take me to bike there…all without knowing my anything about my health, the kind of bike I have, if I would be able to bike at that elevation, etc. (being Google they probably knew)

Started walking 10k steps a day after seeing myself in pictures and hating how I looked. I’d been fairly active in the past, but some injuries sidelined me. I found getting out and walking was much better for my mental health and creativity than staring at a screen. Embraced the zen of walking when it was cold or rainy out - I’m lucky to often see animals around me that I know most people near me are never seeing. Now instead of dreading exercise, I have the opposite problem of getting restless and pissy if I don’t get my walking or biking in.